1. Division of Infection Control and Environmental Health, Department of Air Pollution and NoiseNorwegian Institute of Public Health Oslo Norway
2. Division of Mental and Physical Health, Department of Mental DisordersNorwegian Institute of Public Health Oslo Norway
3. Norwegian Centre for Addiction Research (SERAF)University of Oslo Oslo Norway
4. Faculty of Medicine, Department of Community Medicine and Global HealthUniversity of Oslo Oslo Norway
5. Division of Mental and Physical Health, Department of Noncommunicable DiseasesNorwegian Institute of Public Health Oslo Norway
6. Faculty of Medicine and Health Sciences, Department of Public Health and NursingNorwegian University of Science and Technology Trondheim Norway