1. Department of Medicine, Faculty of Medicine, University of Toronto, Toronto, Canada
2. Department of Medicine, Division of Endocrinology, William Osler Health System, Brampton, Canada
3. The HoPingKong Centre, University Health Network, Toronto, Canada
4. Statistics & Evaluation, Department of Medicine, Faculty of Medicine, University of Toronto, Toronto, Canada
5. Biostatistics Research Unit, University Health Network, Toronto, Canada