1. Division of Dermatology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada
2. The Applied Health Research Centre of the Li Ka Shing Knowledge Institute of St Michael’s Hospital, Toronto, Ontario, Canada
3. Division of Biostatistics, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
4. Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
5. Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
6. Department of Pediatrics, St Michael’s Hospital, Toronto, Ontario, Canada
7. Division of Dermatology, Department of Medicine and Women’s College Research Institute, Women’s College Hospital, Toronto, Ontario, Canada