C. G. Pereira, R. F. Santos, A. P. V. Faria, T. P. R. da Silva, Érica D. Pena, and F. P. Matozinhos, “Reliability of information available on popular websites about vaccination of pregnant women”, Rev. Esc. Enferm. USP, vol. 55, p. e20200517, Sep. 2021, doi: 10.1590/1980-220X-REEUSP-2020-0517.