1. Alan Edwards Pain Management Unit, Montreal General Hospital , Montreal, QC H3G 1A4, Canada
2. CREMIS (Centre de Recherche de Montréal sur les Inégalités Sociales, les Discriminations et les Pratiques Alternatives de Citoyenneté) , Montreal, QC H2X 1K6, Canada
3. Department of Sociology, Faculty of Arts and Sciences, Université de Montréal , Montreal, QC H3T 1N8, Canada
4. Research Center of the Centre Hospitalier de l’Université de Montréal , Montreal, QC H2X 0A9, Canada
5. Department of Anesthesiology and Pain Medicine, Faculty of Medicine, Université de Montréal , Montreal, QC H3T 1J4, Canada
6. D , Montreal, QC H2V 2S9, Canada
7. epartment of Psychology, Faculty of Arts and Sciences, Université de Montréal , Montreal, QC H2V 2S9, Canada