Application of the hepatitis B vaccine in the ventrogluteal region: Evaluation of the pain reaction in newborns. Research, Society and Development, [S. l.], v. 10, n. 6, p. e25310615541, 2021. DOI: 10.33448/rsd-v10i6.15541. Disponível em: https://www.rsdjournal.org/rsd/article/view/15541. Acesso em: 5 dec. 2025.