1 From the Imprints Center for Genetic and Environmental Lifecourse Studies, Department of Epidemiology, Mailman School of Public Health, Columbia University, and the New York State Psychiatric Institute, New York; the Groningen Institute for Evolutionary Life Sciences, University of Groningen, the Netherlands; Hadassah School of Public Health and Community Medicine, Hebrew University, Jerusalem; the Norwegian Institute of Public Health, Oslo; and the Center of Human Development and Aging, New Jersey Medical School, Rutgers, The State University of New Jersey, Newark.