Intersection of http://hl7.org/fhir/ValueSet/research-study-phase and http://hl7.org/fhir/ValueSet/research-study-trial-phase
This is the ValueSet that contains codes in both ResearchStudyPhase (http://hl7.org/fhir/ValueSet/research-study-phase) and Research Study Trial Phase (http://hl7.org/fhir/ValueSet/research-study-trial-phase).