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Ziethlow, Verena; Favre, D.; Viret, J.F.; Frey, Joachim; Stoffel, Michael Hubert (2008). Assessment by electron-microscopy of recombinant Vibrio cholerae and Salmonella vaccine strains expressing enterotoxigenic Escherichia coli-specific surface antigens. Clinical microbiology and infection, 14(3), pp. 282-286. Oxford: Blackwell Publishing 10.1111/j.1469-0691.2007.01908.x
