Fig. 1From: Nested and multipart prospective observational studies, flaming fiasco or efficiently economical?: The Brain, Bone, Heart case studyBrain, Bone, Heart (BBH) Study Timeline. Legend: BBH: Brain, Bone, Heart Study; MWCCS: Multicenter AIDS Cohort Study (MACS)/Women’s Interagency HIV Study (WIHS) Combined Cohort Study (MWCCS); CRF: case report form; sIRB: single Institutional Review BoardBack to article page