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Leesa Lin is part of the research group from the Vaccine Confidence Project\n                      TM\n                      at LSHTM, which, during the same period of the study, received research grants from GlaxoSmithKline, Merck, and Meta. The other authors declare no competing interests.","order":1,"name":"Ethics","label":"Competing interests","group":{"name":"EthicsHeading","label":"Ethics"}},{"value":"Patients and\/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research. Refer to the Methods section for further details.","order":2,"name":"Ethics","label":"Consent to publish","group":{"name":"EthicsHeading","label":"Ethics"}}],"article-number":"509"}}