Professor (Epidemiology) has an M.D. from the University of Geneva and completed a PhD in Epidemiology from Johns Hopkins University. He was Professor and Head of the Division of Clinical Epidemiology at the Geneva University Hospital from 1990 to January 2006. He has since moved to the Center for the Biology of Natural Systems at Queens College, CUNY. His past experience and current interests include the development of a community based risk factor surveillance system, cancer and genetic epidemiology, and the history of the methods and concepts in epidemiology. He is currently interested in evaluating how developing public transportation can stimulate physical activity and thus reduce obesity in the community.