1. Department of Psychology, University of Montreal, Montréal, Québec, Canada.
2. Sainte-Justine Hospital Research Center, Montréal, Québec, Canada.
3. Hôpital du Sacré-Coeur de Montréal Research Center, Montréal, Québec, Canada.
4. Department of Surgery, University of Montreal, Montréal, Québec, Canada.