Published on in Vol 21, No 5 (2019): May

1 Norwegian Centre for Addiction Research (SERAF), Institute of Clinical Medicine, University of Oslo, Oslo , NO
2 Department of Education and Lifelong Learning , Norwegian University of Science and Technology (NTNU), Trondheim , NO
3 Department of Communication and Psychology , Aalborg University (AAU), Aalborg , DK
4 Elective Surgery Centre , Regional Hospital Silkeborg, Silkeborg , DK
5 Interacting Minds Centre, Department of Clinical Medicine, Aarhus University, Aarhus , DK
*all authors contributed equally