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Expanding allelic diversity of Helicobacter pylori vacA.
van Doorn LJ, Figueiredo C, Sanna R, Pena S, Midolo P, Ng EK, Atherton JC, Blaser MJ, Quint WG. van Doorn LJ, et al. J Clin Microbiol. 1998 Sep;36(9):2597-603. doi: 10.1128/JCM.36.9.2597-2603.1998. J Clin Microbiol. 1998. PMID: 9705399 Free PMC article.