1. Division of Trauma and Emergency Surgery, Chang Gung Memorial Hospital, Taoyuan City, ROC;
2. Graduate Institute of Clinical Medical Sciences, Chang Gung University, Taoyuan City, ROC;
3. Department of Surgery, Division of General Surgery, Far-Eastern Memorial Hospital, New Taipei City, ROC;
4. Division of General Surgery, Chang Gung Memorial Hospital, Taoyuan City, ROC