J Thorac Dis 2015 Dec;7(12):2203-13
1 Department of Pulmonary, Allergy and Critical Care Medicine, Hallym University Sacred Heart Hospital, Anyang, Korea ; 2 St. Paul's Hospital, The Catholic University of Korea, Seoul, Korea ; 3 Kyung Hee University Hospital at Gangdong, Seoul, Korea ; 4 GangNeung Asan Hospital, Gangneung, Korea ; 5 Konkuk University Medical Center, Seoul, Korea ; 6 Konyang University Hospital, Daejeon, Korea ; 7 Gyeongsang National University Hospital, Jinju-si, Korea ; 8 Kyung Hee University Medical Center, Seoul, Korea ; 9 Keimyung University Dongsan Medical Center, Daegu, Korea ; 10 Korea University Guro Hospital, Seoul, Korea ; 11 Daegu Catholic University Medical Center, Daegu, Korea ; 12 Daegu Fatima Hospital, Daegu, Korea ; 13 Dongguk University Gyeongju Hospital, Gyeongju-si, Korea ; 14 Maryknoll Medical Center, Busan, Korea ; 15 Seoul National University Bundang Hospital, Seongnam, Korea ; 16 Asan Medical Center, Seoul, Korea ; 17 Soonchunhyang University Bucheon Hospital, Bucheon, Korea ; 18 Soonchunhyang University Seoul Hospital, Seoul, Korea ; 19 Soonchunhyang University Cheonan Hospital, Cheonan, Korea ; 20 Severance Hospital, Seoul, Korea ; 21 Yeungnam University Medical Center, Daegu, Korea ; 22 Ulsan University Hospital, Ulsan, Korea ; 23 Wonkwang University School of Medicine, Iksan, Korea ; 24 Inje University Sanggye Paik Hospital, Seoul, Korea ; 25 Chung-Ang University Hospital, Seoul, Korea ; 26 Hallym University Kangdong Sacred Heart Hospital, Anyang-si, Korea ; 27 Kyungpook National University Hospital, Daegu, Korea.