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Hillerdal G, Lee J, Blomkvist A, Rask-Andersen A, Uddenfeldt M, Koyi H, Rasmussen E.Hillerdal G, et al. Among authors: koyi h.Eur Respir J. 1997 Dec;10(12):2711-5. doi: 10.1183/09031936.97.10122711.Eur Respir J. 1997.PMID: 9493648Free article.