27533007: Lengthening of extraocular muscles, two or more muscles (procedure)

SNOMED CT Concept\Procedure\...

\Surgical procedure (procedure)\Surgical procedure on soft tissue (procedure)\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Surgical procedure on soft tissue (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Surgical procedure on soft tissue (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Muscle operation\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Muscle operation\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Muscle operation\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Operation on musculoskeletal system\Muscle or tendon operation\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Operation on musculoskeletal system\Muscle or tendon operation\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Operation on musculoskeletal system\Muscle or tendon operation\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Operation on musculoskeletal system\Musculoskeletal system repair\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Operation on musculoskeletal system\Musculoskeletal system repair\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Operative procedure on head\Repair of head (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Operative procedure on head\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Operative procedure on head\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Operative procedure on head\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Surgical repair\Repair of head (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Surgical repair\Musculoskeletal system repair\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Surgical repair\Musculoskeletal system repair\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Surgical procedure (procedure)\Surgical repair\Plastic repair with lengthening\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles

\Procedure by site\Procedure on body region (procedure)\Procedure on head\Procedure on eye region (procedure)\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Procedure on eye region (procedure)\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Procedure on eye region (procedure)\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Surgical procedure on orbit proper (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Operative procedure on head\Repair of head (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Operative procedure on head\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Operative procedure on head\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body region (procedure)\Procedure on head\Operative procedure on head\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on soft tissue\Procedure on skeletal muscle (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on soft tissue\Procedure on skeletal muscle (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on soft tissue\Procedure on skeletal muscle (procedure)\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on soft tissue\Procedure on skeletal muscle (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on soft tissue\Procedure on skeletal muscle (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on soft tissue\Surgical procedure on soft tissue (procedure)\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on soft tissue\Surgical procedure on soft tissue (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on soft tissue\Surgical procedure on soft tissue (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on organ\Procedure on muscle\Procedure on skeletal muscle (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on organ\Procedure on muscle\Procedure on skeletal muscle (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on organ\Procedure on muscle\Procedure on skeletal muscle (procedure)\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on organ\Procedure on muscle\Procedure on skeletal muscle (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on organ\Procedure on muscle\Procedure on skeletal muscle (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on organ\Procedure on muscle\Muscle operation\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on organ\Procedure on muscle\Muscle operation\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on organ\Procedure on muscle\Muscle operation\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on visual system (procedure)\Procedure on eye region (procedure)\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on visual system (procedure)\Procedure on eye region (procedure)\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on visual system (procedure)\Procedure on eye region (procedure)\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on visual system (procedure)\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Surgical procedure on orbit proper (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on visual system (procedure)\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on visual system (procedure)\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on visual system (procedure)\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on visual system (procedure)\Procedure on eye region (procedure)\Procedure on orbit proper (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Procedure on skeletal muscular system\Procedure on skeletal muscle (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Procedure on skeletal muscular system\Procedure on skeletal muscle (procedure)\Procedure on extraocular muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Procedure on skeletal muscular system\Procedure on skeletal muscle (procedure)\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Procedure on skeletal muscular system\Procedure on skeletal muscle (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Procedure on skeletal muscular system\Procedure on skeletal muscle (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Procedure on skeletal muscular system\Muscle or tendon operation\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Procedure on skeletal muscular system\Muscle or tendon operation\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Procedure on skeletal muscular system\Muscle or tendon operation\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Operation on musculoskeletal system\Muscle or tendon operation\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Operation on musculoskeletal system\Muscle or tendon operation\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Operation on musculoskeletal system\Muscle or tendon operation\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Operation on musculoskeletal system\Musculoskeletal system repair\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by site\Procedure on body system\Procedure on musculoskeletal system\Operation on musculoskeletal system\Musculoskeletal system repair\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles

\Procedure by method\Surgical procedure on soft tissue (procedure)\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Surgical procedure on soft tissue (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Surgical procedure on soft tissue (procedure)\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Muscle operation\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Muscle operation\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Muscle operation\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Operation on musculoskeletal system\Muscle or tendon operation\Operation on skeletal muscle\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Operation on musculoskeletal system\Muscle or tendon operation\Operation on skeletal muscle\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Operation on musculoskeletal system\Muscle or tendon operation\Operation on skeletal muscle\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Operation on musculoskeletal system\Musculoskeletal system repair\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Operation on musculoskeletal system\Musculoskeletal system repair\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Operative procedure on head\Repair of head (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Operative procedure on head\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Operative procedure on head\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Operative procedure on head\Surgical procedure on eye region (procedure)\Surgical procedure on orbit proper (procedure)\Operation on extraocular muscle\Strabismus surgery\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Surgical repair\Repair of head (procedure)\Repair of orbit\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Surgical repair\Musculoskeletal system repair\Extraocular muscle repair\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Surgical repair\Musculoskeletal system repair\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles
\Procedure by method\Surgical repair\Plastic repair with lengthening\Lengthening of muscle\Lengthening of extraocular muscle\Lengthening of extraocular muscles, two or more muscles

Status: current, Not sufficiently defined by necessary conditions definition status (core metadata concept). Date: 31-Jan 2002. Module: SNOMED CT core

Descriptions:

Id Description Lang Type Status Case? Module

46077012 Lengthening of extraocular muscles, two or more muscles en Synonym (core metadata concept) Active Entire term case insensitive (core metadata concept) SNOMED CT core

758111011 Lengthening of extraocular muscles, two or more muscles (procedure) en Fully specified name Active Entire term case insensitive (core metadata concept) SNOMED CT core

Expanded Value Set

Outbound Relationships	Type	Target	Active	Characteristic	Refinability	Group	Values
Lengthening of extraocular muscles, two or more muscles	Is a	Lengthening of extraocular muscle	true	Inferred relationship	Some
Lengthening of extraocular muscles, two or more muscles	Method	Surgical action	false	Inferred relationship	Some	1
Lengthening of extraocular muscles, two or more muscles	Procedure site	Skeletal muscle structure	false	Inferred relationship	Some	2
Lengthening of extraocular muscles, two or more muscles	Procedure site	Structure of extraocular muscle	false	Inferred relationship	Some	1
Lengthening of extraocular muscles, two or more muscles	Procedure site	Eye region structure (body structure)	false	Inferred relationship	Some	2
Lengthening of extraocular muscles, two or more muscles	Has focus	Strabismus	true	Inferred relationship	Some	2
Lengthening of extraocular muscles, two or more muscles	Method	Surgical lengthening - action	false	Inferred relationship	Some	1
Lengthening of extraocular muscles, two or more muscles	Procedure site - Direct (attribute)	Structure of extraocular muscle	false	Inferred relationship	Some	1
Lengthening of extraocular muscles, two or more muscles	Method	Surgical lengthening - action	true	Inferred relationship	Some	1
Lengthening of extraocular muscles, two or more muscles	Procedure site - Direct (attribute)	Structure of extraocular muscle	true	Inferred relationship	Some	1
Lengthening of extraocular muscles, two or more muscles	Procedure site	Skeletal and/or smooth muscle structure (body structure)	false	Inferred relationship	Some	3

Inbound Relationships

Type

Active

Source

Characteristic

Refinability

Group

This concept is not in any reference sets