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Kent BD, Garvey JF, Ryan S, Nolan G, Dodd JD, McNicholas WT.Kent BD, et al.Eur Respir J. 2013 Nov;42(5):1263-70. doi: 10.1183/09031936.00094812. Epub 2013 Mar 7.Eur Respir J. 2013.PMID: 23471346Free article.