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Harpaz R, Ortega-Sanchez IR, Seward JF; Advisory Committee on Immunization Practices (ACIP) Centers for Disease Control and Prevention (CDC).Harpaz R, et al.MMWR Recomm Rep. 2008 Jun 6;57(RR-5):1-30; quiz CE2-4.MMWR Recomm Rep. 2008.PMID: 18528318