Back to matchesWe found a matchYour institution may have rights to this item. Sign in to continue.TitleSevere COPD cases from Korea, Poland, and USA have substantial differences in respiratory symptoms and other respiratory illnesses.AuthorsWoo Jin Kim; Jae-Joon Yim; Deog Kyeom Kim; Myung Goo Lee; Fuhlbrigge, Anne L.; Sliwinski, Pawel; Hawrylkiewicz, Iwona; Wan, Emily S.; Cho, Michael H.; Silverman, Edwin K.PublicationInternational Journal of COPD, 2017, Vol 12, p3415ISSN1176-9106Publication typeArticleDOI10.2147/COPD.S145908