1. Dalla Lana School of Public Health; University of Toronto; 155 College Street, 6th floor, Toronto, Ontario, Canada M5T 3M7
2. Department of Mathematics and Statistics; McGill University; 805 Sherbrooke Street West, Montreal, Quebec, Canada H3A 2K6
3. Department of Epidemiology, Biostatistics and Occupational Health; McGill University; 1020 Pine Avenue West, Montreal, Quebec, Canada H3A 1A2
4. Department of Medicine, Division of Infectious Diseases; McGill University; 3650 Saint Urbain, Montreal, Quebec, Canada H2X 2P4