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Bouis DA, Popova TG, Takashima A, Norgard MV.Bouis DA, et al. Among authors: norgard mv.Infect Immun. 2001 Jan;69(1):518-28. doi: 10.1128/IAI.69.1.518-528.2001.Infect Immun. 2001.PMID: 11119545Free PMC article.