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Hill J, Leary S, Smither S, Best A, Pettersson J, Forsberg A, Lingard B, Lipka A, Brown KA, Williamson ED, Titball RW.Hill J, et al. Among authors: titball rw.Vaccine. 2009 Nov 23;27(50):7073-9. doi: 10.1016/j.vaccine.2009.09.061. Epub 2009 Sep 26.Vaccine. 2009.PMID: 19786138