Corrigendum to 'Antibody persistence and safety and immunogenicity of a second booster dose nine years after a first booster vaccination with a reduced antigen diphtheria-tetanus-acellular pertussis vaccine (Tdap) in adults'. [Vaccine 36 (2018) 6325–6333]. Issue 12 (10th March 2020) - Brandon, Donald; Kimmel, Murray; Kuriyakose, Sherine O.; Kostanyan, Lusiné; Mesaros, Narcisa