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Bruns AH, Oosterheert JJ, Hak E, Hoepelman AI.Bruns AH, et al.Eur Respir J. 2008 Sep;32(3):726-32. doi: 10.1183/09031936.00003608. Epub 2008 May 28.Eur Respir J. 2008.PMID: 18508833Free article.