1. McGill University Health Centre, Department of Diagnostic Radiology, Montreal General Hospital, Montreal, Quebec, Canada
2. University of Sherbrooke, Faculty of Medicine, Sherbrooke, Quebec, Canada
3. Department of Radiology, Jewish General Hospital, Montreal, Quebec, Canada
4. University of Montreal, Department of Medical Imaging, Hôpital du Sacré-Coeur de Montréal, Montreal, Quebec, Canada