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Evans RA, Singh SJ, Collier R, Williams JE, Morgan MD.Evans RA, et al. Among authors: morgan md.Respir Med. 2009 Jul;103(7):1070-5. doi: 10.1016/j.rmed.2009.01.009. Epub 2009 Feb 13.Respir Med. 2009.PMID: 19217765Free article.
Singh SJ, Morgan MD, Scott S, Walters D, Hardman AE.Singh SJ, et al. Among authors: morgan md.Thorax. 1992 Dec;47(12):1019-24. doi: 10.1136/thx.47.12.1019.Thorax. 1992.PMID: 1494764Free PMC article.
Singh SJ, Morgan MD, Hardman AE, Rowe C, Bardsley PA.Singh SJ, et al. Among authors: morgan md.Eur Respir J. 1994 Nov;7(11):2016-20.Eur Respir J. 1994.PMID: 7875275Free article.Clinical Trial.
Freeman W, Stableforth DE, Cayton RM, Morgan MD.Freeman W, et al. Among authors: morgan md.Respir Med. 1993 Oct;87(7):541-9. doi: 10.1016/0954-6111(93)90011-n.Respir Med. 1993.PMID: 8265843
Singh SJ, Smith DL, Hyland ME, Morgan MD.Singh SJ, et al. Among authors: morgan md.Respir Med. 1998 Sep;92(9):1146-54. doi: 10.1016/s0954-6111(98)90410-3.Respir Med. 1998.PMID: 9926171Free article.