Prevalence and factors associated with pentavalent vaccination: a cross-sectional study in Southern China.

"Declarations Ethics approval and consent to participateEthics approval has been obtained from the Research Ethics Board of the Hainan Women and Children’s Medical Center (2020-002). All participants in the study were informed about the intention of the study and gave their electronic informed consent at the beginning of the online survey. Consent for publicationNot applicable. Competing interestsThe authors declare that they have no competing interests. Competing interests The authors declare that they have no competing interests."

"Funding This work was supported by the Bill & Melinda Gates Foundation (Grant No. INV-049539); the Key Research and Development Program of Hainan Province (Grant No. ZDYF2020210); the Project of the National Social Science Fund of China (Grant No. 20BGL264); and the Shanghai Public Health System Construction Three‐Year Action Plan (Grant No. GWVI-11.1-48)."