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Companion Study Relationship
Definition 1
Specifies the link between a parent study and a companion study. (NCI Thesaurus)
Definition 2
Specifies the link between a parent study and a companion study. NOTE(S): The relationship exists between the version of the parent study and the non-versioned concept of the companion study because the relationship may be added in a new version of the parent study and references the overall notion of the companion study, not a particular version of the companion study. (NCI Thesaurus/BRIDG)
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