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Brumpton BM, Camargo CA Jr, Romundstad PR, Langhammer A, Chen Y, Mai XM.Brumpton BM, et al. Among authors: langhammer a.Eur Respir J. 2013 Dec;42(6):1495-502. doi: 10.1183/09031936.00046013. Epub 2013 Jul 11.Eur Respir J. 2013.PMID: 23845717Free article.
Henriksen AH, Sue-Chu M, Holmen TL, Langhammer A, Bjermer L.Henriksen AH, et al. Among authors: langhammer a.Eur Respir J. 1999 Feb;13(2):301-6. doi: 10.1034/j.1399-3003.1999.13b14.x.Eur Respir J. 1999.PMID: 10065672Free article.
Langhammer A, Johnsen R, Gulsvik A, Holmen TL, Bjermer L.Langhammer A, et al.Eur Respir J. 2001 Nov;18(5):770-9. doi: 10.1183/09031936.01.00255301.Eur Respir J. 2001.PMID: 11757626Free article.
Langhammer A, Johnsen R, Gulsvik A, Holmen TL, Bjermer L.Langhammer A, et al.Eur Respir J. 2003 Jun;21(6):1017-23. doi: 10.1183/09031936.03.00053202.Eur Respir J. 2003.PMID: 12797498Free article.
Tollefsen E, Langhammer A, Bjermer L, Kurtze N, Holmen TL.Tollefsen E, et al. Among authors: langhammer a.Prev Med. 2007 Feb;44(2):178-82. doi: 10.1016/j.ypmed.2006.09.006. Epub 2006 Oct 19.Prev Med. 2007.PMID: 17055041