1. Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
2. Department of Internal Medicine, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, Korea
3. Department of Pathology, Center for Gastric Cancer, National Cancer Center, Goyang, Korea
4. Department of Pathology, Pusan National University Hospital, Pusan National University School of Medicine, Busan, Korea
5. St. Maria Pathology Laboratory, Busan, Korea
6. Department of Surgery, Center for Gastric Cancer, National Cancer Center, Goyang, Korea
7. Department of Internal Medicine, Center for Gastric Cancer, National Cancer Center, Goyang, Korea
8. Department of Surgery, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
9. Department of Pathology, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
10. Department of Internal Medicine, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea