1. Health Research Institute, Faculty of Public Health, Lithuanian University of Health Sciences, Lithuania
2. Institute of Sociology, Lithuanian Centre for Social Sciences, Lithuania
3. Demographic Research Centre, Vytautas Magnus University, Lithuania
4. Demographic Data Laboratory, Max Planck Institute for Demographic Research, Germany
5. Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Canada
6. Zentrum für Interdisziplinäre Suchtforschung der Universität Hamburg (ZIS), Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany