1. Medical Sciences, Dalhousie University, Halifax, NS, Canada;
2. Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada;
3. Department of Psychiatry, University of Toronto, Toronto, ON, Canada;
4. Institute of Medical Science, University of Toronto, Toronto, ON, Canada;
5. Department of Psychiatry, Western University, London and Windsor, ON, Canada;
6. Department of Pharmacology, University of Toronto, Toronto, ON, Canada