Landay to direct the Administrative Core. Dr. Baum is also Scientific Administrator of the D-CFAR. Dr. Baum has worked with several clinical cohorts including the Multicenter AIDS Cohort (MACS), the Chicago WIHS, and participated in a previous program project on HIV Pathogenesis in Women. As a result, she has worked with many of the investigators on this program project and has established an excellent working relationship with them.