1. Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
2. Department of Medicine, University of Toronto, Toronto, ON, Canada
3. Division of Occupational Medicine, Department of Medicine, St Michael’s Hospital, Toronto, ON, Canada
4. MAP Centre for Urban Health Solutions, Li Ka Shing Knowledge Institute, St Michael’s Hospital, Toronto, ON, Canada
5. Occupational Medicine Clinic, St Michael’s Hospital, Toronto, ON, Canada