1. Netherlands Interdisciplinary Demographic Institute (NIDI-KNAW), Lange Houtstraat 19, 2511 CV, The Hague, The Netherlands
2. Department of Sociology, Faculty of Behavioural and Social Sciences, University of Groningen, Grote Rozenstraat 31, 9712 TG, Groningen, The Netherlands
3. Department of Health Psychology, Faculty of Medical Sciences, University Medical Center Groningen, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands