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Model based estimates of long-term persistence of inactivated hepatitis A vaccine-induced antibodies in adults
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Two decades of hepatitis B vaccination in mentally retarded patients: effectiveness, antibody persistence and duration of immune memory
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Antibody persistence and immune memory in healthy adults following vaccination with a two-dose inactivated hepatitis A vaccine: long-term follow-up at 15 years
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Strategies for global prevention of Hepatitis B virus infection
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Hepatitis A booster vaccination : is there a need?