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Steinhoff U, Wand-Württenberger A, Bremerich A, Kaufmann SH.Steinhoff U, et al. Among authors: kaufmann sh.Infect Immun. 1991 Feb;59(2):684-8. doi: 10.1128/iai.59.2.684-688.1991.Infect Immun. 1991.PMID: 1898912Free PMC article.