[1] Uijeongbu St. Mary's hospital,Department of Rehabilitation Medicine
[2] The Catholic University of Korea,Division of Oncology, Department of Internal Medicine
[3] Uijeongbu St. Mary's hospital,Division of Gastroenterology
[4] The Catholic University of Korea,undefined
[5] Department of Internal Medicine,undefined
[6] Uijeongbu St. Mary's hospital,undefined
[7] The Catholic University of Korea,undefined