1. Faculty of Biology and Medicine, University of Lausanne, Rue du Bugnon 21, CH-1011 Lausanne, Switzerland
2. Centre du jeu Excessif, Addiction Medicine, Lausanne University Hospital, University of Lausanne, Avenue de Morges 10, CH-1004 Lausanne, Switzerland
3. Faculty of Medicine, Institute of Global Health, Chemin de Mines 9, CH-1202 Geneva, Switzerland
4. Dependencies Unit, Division for Primary Care, Geneva University Hospitals, Boulevard de la Cluse 75, CH-1205 Geneva, Switzerland
5. Department of French, Faculty of Arts, University of Lausanne, Quartier UNIL-Chamberonne, CH-1015 Lausanne, Switzerland