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Guerra S, Sherrill DL, Kurzius-Spencer M, Venker C, Halonen M, Quan SF, Martinez FD.Guerra S, et al. Among authors: sherrill dl.Respir Med. 2008 Oct;102(10):1473-82. doi: 10.1016/j.rmed.2008.04.011. Epub 2008 Aug 6.Respir Med. 2008.PMID: 18684603Free PMC article.