1. Department for Behavioural Sciences Oslo Metropolitan University Oslo Norway
2. School of Health and Welfare, Jönköping Academy for Improvement of Health and Welfare Jönköping University Jönköping Sweden
3. Faculty of Health Studies VID Specialized University Oslo Norway
4. Health Science Research Centre UCL University College Odense Denmark
5. Centre for Sexology Research, Department of Clinical Medicine Aalborg University Aalborg Denmark