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Yi-Qing C, Bjermer L, Fröjd O, Nettelbladt O, Karlsson-Parra A, Henriksson R.Yi-Qing C, et al. Among authors: bjermer l.Eur Respir J. 1995 Nov;8(11):1872-8. doi: 10.1183/09031936.95.08111872.Eur Respir J. 1995.PMID: 8620955Free article.