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Attridge RT, Frei CR, Restrepo MI, Lawson KA, Ryan L, Pugh MJ, Anzueto A, Mortensen EM.Attridge RT, et al. Among authors: restrepo mi.Eur Respir J. 2011 Oct;38(4):878-87. doi: 10.1183/09031936.00141110. Epub 2011 Mar 24.Eur Respir J. 2011.PMID: 21436359Free article.