http://hl7.org/fhir/StructureDefinition/consent-ResearchStudyContext|5.2.0

When a Research scope Consent, this is the specific research study that is allowed to use the information (or not).
NameFlagsCardTypeDescription & Constraints
Extension
0..1Specific Research Study for Research Context
 
extension
?..0
 
url
?..?
 
value[x] *
1..?
 
 
valueReference *
1..?Reference