1. Norwegian Institute of Public Health, Oslo, Norway
2. Lund University, Lund, Sweden
3. Norwegian Institute of Public Health, Oslo, Norway and University of Saskatchewan, Canada
4. Glanville.info, York, United Kingdom
5. Norwegian Institute of Public Health, Oslo, Norway and Arctic University of Tromsø, Tromsø, Norway
6. University of Bristol, Bristol, United Kingdom
7. Norwegian Institute of Public Health, , Oslo, Norway and Universidad Santo Tomás, Bogotá, Colombia
8. Western Norway University of Applied Sciences, Bergen, Norway