Performance of the doulas during the pregnancy-puerperal cycle: a literature review. Research, Society and Development, [S. l.], v. 9, n. 7, p. e598974505, 2020. DOI: 10.33448/rsd-v9i7.4505. Disponível em: https://www.rsdjournal.org/rsd/article/view/4505. Acesso em: 5 dec. 2025.