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Erkens C, Slump E, Kamphorst M, Keizer S, van Gerven PJ, Bwire R, Berkel M, Borgdorff MW, Verver S.Erkens C, et al. Among authors: borgdorff mw.Eur Respir J. 2008 Jul;32(1):153-61. doi: 10.1183/09031936.00137907. Epub 2008 Feb 20.Eur Respir J. 2008.PMID: 18287123Free article.