1. Faculty of Medicine and Health SciencesNorwegian University of Science and Technology Trondheim Norway
2. Department of Mental HealthSt Olav's University Hospital HF, Tiller District Psychiatric Centre Trondheim Norway
3. Faculty of Medicine and Health ScienceNorwegian University of Science and Technology Aalesund Norway
4. Faculty of Medicine and Health SciencesUniversity of Nottingham Nottingham UK