[1] Yonsei University College of Medicine,Department of Internal Medicine, Gangnam Severance Hospital
[2] The Catholic University of Korea,Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine, Seoul St Mary’s Hospital, College of Medicine
[3] Health Insurance Review & Assessment Service,Healthcare Review and Assessment Committee
[4] Health Insurance Review & Assessment Service,Division of Quality Assessment Management
[5] Konkuk University School of Medicine,Division of Pulmonary, Allergy and Critical Care Medicine, Department of Internal Medicine