1. Department of Surgery, School of Medicine, College of Medicine Taipei Medical University Taipei Taiwan
2. Division of Gastrointestinal Surgery, Department of Surgery Taipei Medical University Hospital, Taipei Medical University Taipei Taiwan
3. Research Center of Biostatistics Taipei Medical University Taipei Taiwan
4. Department of Surgery Min‐Sheng General Hospital Taoyuan Taiwan
5. Department of Surgery SoonChunHyang University Seoul Hospital Seoul South Korea
6. Weight Loss and Metabolic Surgery Center Yotsuya Medical Cube Tokyo Japan
7. Department of Surgery, Khoo Teck Puat Hospital Singapore
8. Metabolic and Bariatric Center Taichung Tzu Chi Hospital Taichung Taiwan
9. Department of Surgery Prince of Wales Hospital, Faculty of Medicine, The Chinese University of Hong Kong Hong Kong
10. Weight Loss & Health Management Center E‐DA Healthcare Group Kaohsiung Taiwan
11. Department of Surgery National Cheng Kung University Hospital Tainan Taiwan
12. Division of General Surgery (Upper Gastrointestinal Surgery), Department of Surgery University Surgical Cluster, National University Hospital Singapore
13. Institute of Minimally Invasive Surgical Sciences and Research, Saifee Hospital Mumbai India
14. Division of General Surgery, Department of Surgery, Shuang Ho Hospital Taipei Medical University New Taipei City Taiwan