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Peterson EM, Zhong GM, Carlson E, de la Maza LM.Peterson EM, et al. Among authors: zhong gm.Infect Immun. 1988 Apr;56(4):885-91. doi: 10.1128/iai.56.4.885-891.1988.Infect Immun. 1988.PMID: 3346076Free PMC article.