1. Department of Surgery; National Health Insurance Service Ilsan Hospital; Goyang Republic of Korea
2. Department of Surgery; Yonsei University College of Medicine; Seoul Republic of Korea
3. Department of Surgery; Kobe City Medical Center West Hospital; Kobe Japan
4. Department of Surgery; City of Hope National Medical Center; Duarte California
5. Department of General Surgery, Karadeniz Technical University College of Medicine; Farabi Hospital; Trabzon Turkey
6. Gastric Cancer Center; Yonsei Cancer Center; Yonsei University Health System; Seoul Republic of Korea
7. Robot and MIS Center, Severance Hospital; Yonsei University Health System; Seoul Republic of Korea