[1] Kyungpook National University,Department of Internal Medicine, Kyungpook National University Hospital, School of Medicine
[2] Yeungnam University College of Medicine,Department of Internal Medicine
[3] Keimyung University School of Medicine,Department of Internal Medicine
[4] Catholic University of Daegu School of Medicine,Department of Internal Medicine
[5] Fatima Hospital of Daegu,Department of Internal Medicine
[6] Dongguk University School of Medicine,Department of Internal Medicine