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Lang, PO. Inactivated Influenza Vaccines: Pre-Vaccination Haemagglutinin-Antibody Titres Influence the Vaccine Response but Not Necessarily the Vaccine Effectiveness. Drugs Aging 28, 505 (2011). https://doi.org/10.2165/11592350-000000000-00000
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DOI: https://doi.org/10.2165/11592350-000000000-00000