1 University of Helsinki and Helsinki University Hospital, Helsinki, Finland, University of Oulu, Center for Life Course Health Research, Oulu, Finland.
2 Clinicum, Faculty of Medicine, University of Helsinki, Finnish Institute of Occupational Health, Helsinki, Finland.
3 Clinicum, Faculty of Medicine, University of Helsinki, Finnish Institute of Occupational Health, Helsinki, Finland, Department of Epidemiology and Public Health, University College London, London, United Kingdom.