1 Research Institute of the McGill University Health Centre, Montreal, Canada.
2 Department of Internal Medicine, Hôpital de la Tour and University of Geneva, Switzerland.
3 Department of Medicine, McGill University, Montreal, Canada.
4 Li Ka Shing Knowledge Institute, Toronto, Ontario, Canada.
5 Department of Medicine, McGill University, Montreal, Canada; Division of Clinical Epidemiology, Centre for Outcomes Research and Evaluation, Research Institute of the McGill University Health Centre, Montreal, Canada. Electronic address: maida.sewitch@mcgill.ca.