1 Department of Medical Imaging, London Health Sciences Centre, 800 Commissioners Rd E, London, Ontario, Canada.
2 Department of Epidemiology, Biostatistics and Occupational Health, McGill University, 2001 McGill College, Montréal, Quebec, Canada.
3 Department of Medical Imaging, London Health Sciences Centre, 800 Commissioners Rd E, London, Ontario, Canada. Electronic address: Jaron.Chong@lhsc.on.ca.