Affiliation: | (1) Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Pungnap-2 Dong, Songpa-Gu, Seoul, Korea;(2) Department of Neuropsychiatry, Seoul National University Hospital, 101 Daehang-ro, Jongno-gu, Seoul, Korea;(3) Department of Surgery, Yonsei University College of Medicine, 250 Seongsan-ro, Seodaemun-gu, Seoul, 120-752, Korea;(4) Department of Internal Medicine, Yonsei University College of Medicine, 250 Seongsan-ro, Seodaemun-gu, Seoul, Korea; |