1 University of Toronto Dalla Lana School of Public Health (Gitelman, Kim); Division of Internal Medicine (An), St. Joseph's Health Centre, Unity Health Toronto; Ontario Poison Centre (An), The Hospital for Sick Children; Division of Occupational Medicine (Spilchuk), Temerty Faculty of Medicine, University of Toronto; Environmental and Occupational Health (Spilchuk, Kim), Public Health Ontario, Toronto, Ont. julian.gitelman@gmail.com.
2 University of Toronto Dalla Lana School of Public Health (Gitelman, Kim); Division of Internal Medicine (An), St. Joseph's Health Centre, Unity Health Toronto; Ontario Poison Centre (An), The Hospital for Sick Children; Division of Occupational Medicine (Spilchuk), Temerty Faculty of Medicine, University of Toronto; Environmental and Occupational Health (Spilchuk, Kim), Public Health Ontario, Toronto, Ont.