Department of Medicine (Yan, Garber, Gershon), University of Toronto, Toronto, Ont.; Department of Medicine (Yan), University of British Columbia, Vancouver, BC; ICES (Saxena, Calzavara, Brown, Gershon, Kumar, Lee, Schwartz, Daneman), Toronto, Ont.; Dalla Lana School of Public Health (Brown, Johnstone), University of Toronto, Toronto, Ont.; Public Health Ontario (Brown, Garber, Johnstone, Langford, Schwartz, Daneman), Toronto, Ont.; Ottawa Hospital Research Institute (Garber), Ottawa, Ont.; Sunnybrook Health Sciences Centre (Gershon, Daneman); Sinai Health System (Johnstone); Unity Health Toronto (Schwartz), Toronto, Ont.
MD