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Lahti E, Peltola V, Waris M, Virkki R, Rantakokko-Jalava K, Jalava J, Eerola E, Ruuskanen O.Lahti E, et al. Among authors: waris m.Thorax. 2009 Mar;64(3):252-7. doi: 10.1136/thx.2008.099051. Epub 2008 Dec 3.Thorax. 2009.PMID: 19052043