1. From the Department of Society, Human Development, and Health (J.R.M., B.D.C., I.K., M.P., S.V.S., M.M.G.), Harvard School of Public Health, Boston, MA; Health & Social Care (M.A.), Department of Social Policy, London School of Economics & Political Science, London, UK; Department of Public Health (M.A.), Erasmus MC, Rotterdam, The Netherlands; and the Department of Epidemiology (L.M.B.), Columbia University Mailman School of Public Health, New York, NY.