Ronny A. Shtarkshall is head of the Social Science and Health Behavior Program, Braun School of Public Health, and of community medicine at the Hebrew University and Hadassah Medical Organization, Jerusalem. John S. Santelli is professor of clinical population and family health and clinical pediatrics, Heilbrunn Department of Population and Family Health; and Jennifer S. Hirsch is associate professor of sociomedical sciences—both at the Mailman School of Public Health, Columbia University, New York.