About the Authors

Marc Dupuis

Roles Conceptualization, Formal analysis, Methodology, Writing – original draft, Writing – review & editing

marc.dupuis@unibe.ch

Affiliation Institute of Primary Health Care (BIHAM), University of Bern, Bern, Switzerland

Joseph Studer

Roles Conceptualization, Data curation, Investigation, Methodology, Project administration, Writing – review & editing

Affiliations Service of Addiction Medicine, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland, Service of Adult Psychiatry North-West, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland

Matthias Wicki

Roles Methodology, Writing – review & editing

Affiliation Institute for Research, Development and Evaluation, Bern University of Teacher Education, Bern, Switzerland

Simon Marmet

Roles Data curation, Investigation, Methodology, Project administration, Writing – review & editing

Affiliation School of Social Work, University of Applied Sciences Northwestern Switzerland, Olten, Switzerland

Gerhard Gmel

Roles Conceptualization, Data curation, Funding acquisition, Investigation, Project administration, Supervision, Writing – review & editing

Affiliations Service of Addiction Medicine, Department of Psychiatry, Lausanne University Hospital and University of Lausanne, Lausanne, Switzerland, Addiction Switzerland, Lausanne, Lausanne, Switzerland, Centre for Addiction and Mental Health, Toronto, Ontario, Canada, University of the West of England, Frenchay Campus, Coldharbour Lane, United Kingdom

Competing Interests

The authors have declared that no competing interests exist.