Affiliation: | (1) Division of Medical Oncology, Yonsei Cancer Center, Yonsei University College of Medicine, Seoul, Korea;(2) Division of Oncology, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea;(3) Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea;(4) Cancer Metastasis Research Center, Yonsei University College of Medicine, Seoul, Korea;(5) Department of Surgery, Yonsei University College of Medicine, Seoul, Korea;(6) Division of Oncology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei Cancer Center, Yonsei University College of Medicine, 712, Eonju-Ro (146-92, Dogok-Dong), Gangnam-Gu, Seoul, 135-720, Korea; |