Division of Hematology, Department of Medicine, University of Ottawa, ON, Canada; Department of General Internal Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland. Division of Hematology, Department of Medicine, University of Ottawa, ON, Canada; School of Epidemiology and Public Health, University of Ottawa, Ottawa, ON, Canada; Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, ON, Canada. Electronic address: lcastellucci@toh.ca.