Institution: | (1) Department of Radiology, Seoul National University College of Medicine, 28 Yongon-Dong, Chongno-Ku, 110-744 Seoul, Korea;(2) Department of Thoracic Surgery, Seoul National University College of Medicine, 28 Yongon-Dong, Chongno-Ku, 110-744 Seoul, Korea;(3) Department of Internal Medicine, Seoul National University College of Medicine, 28 Yongon-Dong, Chongno-Ku, 110-744 Seoul, Korea |