1. Division of Emergency and Critical Care Radiology, Department of Medical Imaging and Intervention, Chang Gung Memorial Hospital, Chang Gung University, Taiwan.
2. Department of Medical Imaging and Intervention, New Taipei Municipal TuCheng Hospital, Chang Gung University, Taiwan.
3. Division of Diagnostic Radiology, Department of Radiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.