1. Department of Emergency and Trauma Radiology, Vancouver General Hospital, Vancouver, British Columbia, Canada
2. Department of Radiology, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
3. Department of Thoracic Radiology, Vancouver General Hospital, University of British Columbia, Vancouver, British Columbia, Canada
4. King Saud bin Abdulaziz University for Health Sciences, King Abdullah International Medical Research Center, Ministry of the National Guard, Health Affairs, Medical Imaging Department, Abdominal Imaging Section, Riyadh, Saudi Arabia
5. Department of Radiology, Pardis Noor Medical Imaging Centers, Tehran, Iran
6. Surrey Memorial Hospital, Department of Radiology, University of British Columbia, Vancouver, British Columbia, Canada
7. Imam Khomeini Hospital Complex, Tehran, Iran