Yoon, Ho Il; Lee, Chang-Hoon; Kim, Deog Kyeom; Park, Geun Min; Lee, Sang-Min; Yim, Jae-Joon; Kim, Jae-Yeol; Lee, Jae Ho; Lee, Choon-Taek; Chung, Hee Soon, et al.
ArticleIssue Date2013CitationINTERNATIONAL JOURNAL OF CHRONIC OBSTRUCTIVE PULMONARY DISEASE, v.8, pp 329 - 334PublisherDOVE MEDICAL PRESS LTD