[1] Univ Ottawa, Fac Med, Sch Epidemiol & Publ Hlth, 600 Peter Morand,Room 301J, Ottawa, ON K1G5Z3, Canada
[2] Univ Ottawa, Fac Med, 451 Smyth Rd, Ottawa, ON K1H 8M5, Canada
[3] McGill Univ, Fac Arts, Dept Sociol, 855 Sherbrooke St West, Quebec City, PQ H3A 2T7, Canada
[4] Univ Ottawa, Fac Hlth Sci, Interdisciplinary Sch Hlth Sci, 25 Univ Private, Ottawa, ON K1N 7K4, Canada