Frequency of perineal lacerations and episiotomy in a university hospital in the mountain region of Rio de Janeiro. Research, Society and Development, [S. l.], v. 9, n. 8, p. e640985613, 2020. DOI: 10.33448/rsd-v9i8.5613. Disponível em: https://www.rsdjournal.org/rsd/article/view/5613. Acesso em: 13 dec. 2025.