1Culture, Community, and Health Studies, Centre for Addiction and Mental Health (Clarke Division), University of Toronto and University Health Network, Toronto, Ont.,
2Faculty of Medicine, University of Western Ontario and London Health Sciences Centre, London, Ont.,
3Faculty of Medicine and
4Faculty of Medicine, University of Calgary and Calgary Regional Health Authority, Calgary, Alta., Canada
5Department of Nephrology, Leiden University Medical Center, Leiden, The Netherlands
6Department of Psychology, McGill University and Royal Victoria Hospital, Montreal, Que., and