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Smith JA, Earis JE, Woodcock AA.Smith JA, et al. Among authors: woodcock aa.Cough. 2006 Aug 3;2:6. doi: 10.1186/1745-9974-2-6.Cough. 2006.PMID: 16887019Free PMC article.
Decalmer S, Woodcock A, Greaves M, Howe M, Smith J.Decalmer S, et al. Among authors: woodcock a.Eur Respir J. 2007 Dec;30(6):1138-42. doi: 10.1183/09031936.00034807. Epub 2007 Oct 10.Eur Respir J. 2007.PMID: 17928312Free article.