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External validity of randomized controlled trials in COPD.
Travers J, Marsh S, Caldwell B, Williams M, Aldington S, Weatherall M, Shirtcliffe P, Beasley R. Travers J, et al. Among authors: shirtcliffe p. Respir Med. 2007 Jun;101(6):1313-20. doi: 10.1016/j.rmed.2006.10.011. Epub 2006 Nov 17. Respir Med. 2007. PMID: 17113277 Free article.
Proportional classifications of COPD phenotypes.
Marsh SE, Travers J, Weatherall M, Williams MV, Aldington S, Shirtcliffe PM, Hansell AL, Nowitz MR, McNaughton AA, Soriano JB, Beasley RW. Marsh SE, et al. Among authors: shirtcliffe pm. Thorax. 2008 Sep;63(9):761-7. doi: 10.1136/thx.2007.089193. Thorax. 2008. PMID: 18728201 Free PMC article.
Distinct clinical phenotypes of airways disease defined by cluster analysis.
Weatherall M, Travers J, Shirtcliffe PM, Marsh SE, Williams MV, Nowitz MR, Aldington S, Beasley R. Weatherall M, et al. Among authors: shirtcliffe pm. Eur Respir J. 2009 Oct;34(4):812-8. doi: 10.1183/09031936.00174408. Epub 2009 Apr 8. Eur Respir J. 2009. PMID: 19357143 Free article.
55 results