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Collaborative Clinical Research Branch (CCRB)

Michael A. Polis, M.D., MPH, Branch Chief

Elizabeth Higgs, M.D., Deputy Branch Chief

Julia A. Metcalf, B.A., Clinical Research Specialist

Susan Orsega, CDR USPHS, Nurse Practitioner

John Powers III, M.D., FACP, FIDSA, Senior Medical Scientist [C]

Alice Rosenberg, R.N., Clinical Research Nurse [C]

Sophia Siddiqui, M.D., Medical Officer

Christian Yoder, M.P.H, RN, Clinical Research Specialist

Michael Belson, B.S., Microbiologist

Last Updated September 24, 2012