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Oxford JS.Oxford JS.Philos Trans R Soc Lond B Biol Sci. 2001 Dec 29;356(1416):1857-9. doi: 10.1098/rstb.2001.1012.Philos Trans R Soc Lond B Biol Sci. 2001.PMID: 11779384Free PMC article.Review.
Oxford JS, Lambkin R, Sefton A, Daniels R, Elliot A, Brown R, Gill D.Oxford JS, et al.Vaccine. 2005 Jan 4;23(7):940-5. doi: 10.1016/j.vaccine.2004.06.035.Vaccine. 2005.PMID: 15603896