Yoon, Jung-Ki; Lee, Jung-Kyu; Lee, Chang-Hoon; Hwang, Yong Il; Kim, Hyunkuk; Park, Dongil; Hwang, Ki-Eun; Kim, Sang-Heon; Jung, Ki-Suck; Yoo, Kwang Ha, et al.
ArticleIssue Date2020CitationINTERNATIONAL JOURNAL OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE, v.15, pp.2061 - 2069PublisherDOVE MEDICAL PRESS LTD