1. Division of Dermatology, McGill University, Montreal, QC H4A 3J1, Canada
2. Faculté de médecine, Université de Montréal, Montréal, QC H3T 1J4, Canada
3. Faculty of Medicine, McGill University, Montreal, QC H4A3J1, Canada
4. Faculty of Medicine, University of British Columbia, Vancouver, BC V6T 1Z4, Canada
5. Faculté de médecine, Université Laval, Québec, QC G1V 0A6, Canada
6. Faculty of Sciences, University of Ottawa, Ottawa, ON K1N 6N5, Canada
7. Division of Clinical Epidemiology, McGill University, Montreal, QC H4A 3J1, Canada
8. Population Oncology, Cancer Care Manitoba, Winnipeg, MB R3C 2B1, Canada
9. Community Health Sciences, Max Rady College of Medicine, University of Manitoba, Winnipeg, MB R3C 2B1, Canada
10. School of Kinesiology and Physical Activity Sciences, Faculty of Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada
11. Research Centre, Sainte-Justine University Hospital, Montreal, QC H3T 1C5, Canada