1. Department of Psychology Reykjavik University Reykjavik Iceland
2. Icelandic Center for Social Research and Analysis Reykjavik Iceland
3. Department of Social and Behavioral Sciences School of Public Health West Virginia University Morgantown West Virginia USA
4. Population Health Science and Policy Icahn School of Medicine at Mount Sinai New York City New York USA
5. Department of Health and Behavior Studies, Teachers College Columbia University New York City New York USA
6. Department of Sociomedical Sciences Mailman School of Public Health Columbia University New York City New York USA