1. Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada
2. Department of Pharmaceutical Sciences, Leslie Dan Faculty of Pharmacy, University of Toronto, Toronto, Ontario, Canada, and Division of Clinical Pharmacology, Department of Pediatrics, Hospital For Sick Children, Toronto, Ontario, Canada
3. Division of Infectious Disease, University Health Network, Toronto General Hospital, Toronto, Ontario, Canada, and Department of Medicine, University of Toronto, Toronto, Ontario, Canada
4. HIV Social, Behavioural and Epidemiology Studies Unit, Toronto, Ontario, Canada, and Department of Public Health Sciences, University of Toronto, Toronto, Ontario, Canada