1 Division of General Internal Medicine, Department of Medicine, McGill University Health Centre, Montreal, Quebec, Canada.
2 Division of Internal Medicine, Department of Medicine, St Michael's Hospital, University of Toronto, Toronto, Ontario, Canada.
3 Division of General Internal Medicine, Department of Medicine, McGill University Health Centre, Montreal, Quebec, Canada3Division of Infectious Diseases, Department of Medicine, McGill University Health Centre, Montreal, Quebec, Canada4McGill Centre for Q.