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Companion Study Relationship Registration Required Indicator
Specifies whether registration to the companion study is mandatory when registering to the parent study. (NCI Thesaurus)
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Specifies the link between a parent study and a companion study.
A coded value specifying the type of ancillary entity or event to the primary entity or event.
Closely crowded or packed together.
An optical disk that is physically the same as an audio CD, but contains multimedia information (images, sound, etc.) The user can…
A group of islands in the Mozambique Channel, about two-thirds of the way between northern Madagascar and northern Mozambique, northwest of…
In epidemiology, a rating scale for comorbidity.
