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King PT, Holdsworth SR, Freezer NJ, Villanueva E, Farmer MW, Guy P, Holmes PW.King PT, et al.Respir Care. 2010 Dec;55(12):1686-92.Respir Care. 2010.PMID: 21122177Free article.
King P, Holdsworth S, Freezer N, Holmes P.King P, et al.Intern Med J. 2006 Nov;36(11):729-37. doi: 10.1111/j.1445-5994.2006.01219.x.Intern Med J. 2006.PMID: 17040360Review.
King PT, Holdsworth SR, Freezer NJ, Villanueva E, Gallagher M, Holmes PW.King PT, et al.COPD. 2005 Mar;2(1):27-34. doi: 10.1081/copd-200050685.COPD. 2005.PMID: 17136958