1 From the Faculty of Medicine, University of Ottawa, Ottawa, Ontario, Canada (R.A.F.); Department of Radiology, University of Ottawa and the Ottawa Hospital, Civic Campus, 1053 Carling Ave, Room C120, Ottawa, ON, Canada K1Y 4E9 (R.A.F., M.D.F.M.); Department of Clinical Epidemiology and Department of Biostatistics and Bioinformatics, Amsterdam Public Health Research Institute, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands (P.M.B.); and Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Ontario, Canada (M.D.F.M.).