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Jones PW, Agusti AG.Jones PW, et al. Among authors: agusti ag.Eur Respir J. 2006 Apr;27(4):822-32. doi: 10.1183/09031936.06.00145104.Eur Respir J. 2006.PMID: 16585091Free article.Review.
Carrera M, Barbé F, Agusti AG.Carrera M, et al. Among authors: agusti ag.Respir Med. 1998 Aug;92(8):1028-31. doi: 10.1016/s0954-6111(98)90350-x.Respir Med. 1998.PMID: 9893771Free article.