1. From the Tampere School of Public Health, University of Tampere, Tampere, Finland (LU, SMV, JN, and LM); the Department of Health Promotion and Chronic Disease Prevention, National Public Health Institute, Helsinki, Finland (LU, SMV, UU, JN, SN, CK-K, and M-LO); the Department of Epidemiology and Population Health, Medical Statistics Unit, London School of Hygiene & Tropical Medicine, London, Uni