Predictive factors for premature birth: comparison between Northern and Northeastern of Brazil. Research, Society and Development, [S. l.], v. 9, n. 9, p. e01996669, 2020. DOI: 10.33448/rsd-v9i9.6669. Disponível em: https://rsdjournal.org/rsd/article/view/6669. Acesso em: 5 dec. 2025.