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Sopena N, Sabrià-Leal M, Pedro-Botet ML, Padilla E, Dominguez J, Morera J, Tudela P.Sopena N, et al.Chest. 1998 May;113(5):1195-200. doi: 10.1378/chest.113.5.1195.Chest. 1998.PMID: 9596294