cancers, and adverse birth outcomes. Dr. Ritz received her M.D. from the Board of Health in Hamburg, Germany and her Ph.D. from the University of California, Los Angeles.

Rebecca P. Smith, M.D., is Assistant Clinical Professor of Psychiatry at Mount Sinai Hospital and Medical School. She has worked on the development of clinical and research programs for survivors of terrorism, disasters and violence, in the United States and abroad, including India, Sri Lanka, Israel and the Palestinian territories, New Orleans, and the Asian Tsunami). She has done extensive work on monitoring the physical and mental health effects of the World Trade Center disaster. Dr. Smith has also worked in design and analysis of epidemiologic studies and clinical trials of human immunodeficiency virus and the epidemiology of suicide. Dr. Smith attended Brown University Medical School and completed her psychiatric residency and fellowship at New York Presbyterian Hospital.

Ezra S. Susser, M.D., Ph.D., is Professor of Epidemiology, at the Mailman School of Public Health and Professor of Psychiatry at the College of Physicians and Surgeons at Columbia University. His recent research has been primarily on the epidemiology of mental disorders, and on examining the role of early-life experience in health and disease throughout the life course. He heads the Imprints Center for Genetic and Environmental Lifecourse Studies, which fosters collaborative research and intellectual exchange among investigators studying developmental origins in birth cohorts across the globe. As one example, the findings from a series of studies have suggested that exposure to famine in early gestation is associated with increased schizophrenia among offspring. Dr. Susser is Associate Editor of the International Journal of Epidemiology, and Former Chair of the Department of Epidemiology at the Mailman School of Public Health (1999-2008). He received his M.D. and Ph.D. from Columbia University.

Christina M. Wolfson, Ph.D., is Director of the Division of Clinical Epidemiology at the McGill University Health Centre and a Professor in the Department of Epidemiology and Biostatistics and Occupational Health and in the Department of Medicine at McGill University. She is an Associate Member in the Department of Neurology and Neurosurgery, the Department of Mathematics and Statistics, and the Division of Geriatric Medicine at McGill University. Her research lies in the epidemiology of neurodegenerative disorders, including dementia, multiple sclerosis, amyotrophic lateral sclerosis, and Parkinson’s disease. She is also Co-Principal Investigator on the Canadian Longitudinal Study on Aging, a nationwide 20-year study of 50,000 participants aged 45 to 85. Dr. Wolfson received her Ph.D. in epidemiology and biostatistics from McGill University.

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