Professor of Epidemiology, UNC - Chapel Hill

University of North Carolina at Chapel Hill School of Medicine

Austin Hospital, University of Melbourne

Assistant Professor at UCLA

Sanofi, Pfizer Inc., Merck Research Labs, Brandeis University

Professor, University of Texas Health Science Center at Houston

Vanderbilt University Medical Center

Professor, Community and Family Medicine, Duke University

Emory University

professor of health information management,iran university of medical sciences