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Law D, Wilkie KM, Freeman R, Gould FK.Law D, et al. Among authors: freeman r.J Med Microbiol. 1992 Jul;37(1):15-21. doi: 10.1099/00222615-37-1-15.J Med Microbiol. 1992.PMID: 1385631
Perry JD, Ford M, Taylor J, Jones AL, Freeman R, Gould FK.Perry JD, et al. Among authors: freeman r.J Clin Microbiol. 1999 Mar;37(3):766-8. doi: 10.1128/JCM.37.3.766-768.1999.J Clin Microbiol. 1999.PMID: 9986848Free PMC article.