1 Anne Duffy, Department of Psychiatry, University of Calgary, Canada. Email: acduffy@ucalgary.ca; Julie Horrocks, Charles Keown-Stoneman, Department of Mathematics and Statistics, University of Guelph, Canada; Sarah Doucette, Department of Community Health and Epidemiology, Dalhousie University, Canada; Paul Grof, Mood Disorders Centre of Ottawa and Department of Psychiatry, University of Toronto, Canada.