[1] Department of Pathology,Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk 561-712, South Korea
[2] Department of Radiology, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk 561-712, South Korea
[3] Department of Surgery,Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk 561-712, South Korea
[4] Division of Gastroenterology and Hepatology, Department of Internal Medicine, the Research Institute for Medical Sciences, Chonbuk National University Medical School and Hospital, Jeonju, Jeonbuk 561-712, South Korea
[5] Division of Gastroenterology and Hepatology, Department of Internal Medicine, the Research Institute for Medical Sciences,Chonbuk National University Medical School and Hospital, Jeonju,Jeonbuk 561-712, South Korea