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Yang KY, Shih HC, How CK, Chen CY, Hsu HS, Yang CW, Lee YC, Perng RP, Peng CH, Li HY, Chang CM, Mou CY, Chiou SH.Yang KY, et al. Among authors: hsu hs.Chest. 2011 Nov;140(5):1243-1253. doi: 10.1378/chest.11-0539. Epub 2011 Aug 11.Chest. 2011.PMID: 21835903