Dr. Miller has served as Director of the Epidemiology Unit of the National Cancer Institute of Canada, Chair of the Department of Preventive Medicine and Biostatistics, University of Toronto, Senior Epidemiologist, International Agency for Research on Cancer, and Head, Division of Cancer Epidemiology, German Cancer Research Centre, 2000-03; He has served as a consultant to the Division of Cancer Prevention, U.S. National Cancer Institute and to the World Health Organization