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John M, Crean TI, Calderwood SB, Ryan ET.John M, et al. Among authors: calderwood sb.Infect Immun. 2000 Mar;68(3):1171-5. doi: 10.1128/IAI.68.3.1171-1175.2000.Infect Immun. 2000.PMID: 10678922Free PMC article.