1. Center for Evaluation and Information on Pharmacodependence, Department of Clinical Pharmacology, University Hospital, Nantes, France
2. EA4275, Biostatistics, Pharmacoepidemiology and Subjective Measures in Health Sciences, University of Nantes, Nantes, France
3. Addictology and Psychiatry Department, University Hospital, Nantes, France
4. Addictology Department, Les Apsyades association, Bouguenais, France