1. Division of Colorectal Surgery, Department of Surgery, Cathay General Hospital, Taipei 10630, Taiwan, R.O.C.
2. Division of Gastroenterology, Department of Internal Medicine, Sijhih Cathay General Hospital, New Taipei 22174, Taiwan, R.O.C.
3. School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei 24205, Taiwan, R.O.C.
4. Comprehensive Breast Health Center, Department of Surgery, Taipei Veterans General Hospital, Taipei 11217, Taiwan, R.O.C.
5. Department of Medical Research, Cathay General Hospital, Taipei 10630, Taiwan, R.O.C.