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Arnold FW, Wiemken TL, Peyrani P, Mirsaeidi M, Ramirez JA; Community Acquired Pneumonia Organization (CAPO) Study Group.Arnold FW, et al.Eur Respir J. 2013 May;41(5):1135-40. doi: 10.1183/09031936.00046212. Epub 2012 Jul 26.Eur Respir J. 2013.PMID: 22835618Free article.