1. Department of Surgery , E-Da Hospital, Kaohsiung , Taiwan
2. Healthcare Group Department of Medical Education , E-Da Hospital, Kaohsiung , Taiwan
3. School of Medicine, College of Medicine , I-Shou University, Kaohsiung , Taiwan
4. Bariatric and Metabolism International Surgery Center , E-Da Hospital, Kaohsiung , Taiwan
5. Division of General Surgery, Department of Surgery , E-Da Hospital, Kaohsiung , Taiwan