Affiliation: | 1. Department of Epidemiology and Public Health, University College, London, UK;2. MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, UK;3. Division of Epidemiology, Tohoku University School of Public Health, Sendai, Japan;4. School of Social and Community Medicine, University of Bristol, Bristol, UK;5. Department of Psychology and Logopedics, University of Helsinki, Helsinki, Finland |