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Scott HA, Gibson PG, Garg ML, Wood LG.Scott HA, et al. Among authors: gibson pg.Eur Respir J. 2011 Sep;38(3):594-602. doi: 10.1183/09031936.00139810. Epub 2011 Feb 10.Eur Respir J. 2011.PMID: 21310876Free article.