Early Gastric Cancer

• Chonnam National University Hwasun Hospital — Hwasun, Chonnam, South Korea
• National Cancer Center — Goyang-si, Gyeonggi-do, South Korea
• Soonchunhyang University Bucheon Hospital — Bucheon-si, South Korea
• Dongnam Institute of Radiological and Medical Science — Busan, South Korea

• Respiratory Clinic, National Cancer Center — Goyang-si, Gyeonggi-do, South Korea

• Combined Endoscopy Center, Prince of Wales Hospital — Hong Kong

• Severance Hospital — Seoul, South Korea

• Sevrance hospital — Seoul, South Korea

• National Cancer Center — Goyang, Kyeonggi-do, South Korea

• Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institue, Yonsei Universiy College of Medicine — Seoul, South Korea

Not specified

• Soonchunhyang University Hospital — Seoul, South Korea

• Chonnam National University Hwasun Hospital — Hwasun, Chonnam, South Korea
• National Cancer Center, Korea — Goyang-si, Gyeonggi-do, South Korea
• Ajou University School of Medicine — Suwon, Gyeonggi-do, South Korea
• Gyeongsang National University — Jinju, Gyeongsangnam-do, South Korea