Characterization of dental care in Piauí: Evaluation of the reference service. Research, Society and Development, [S. l.], v. 10, n. 7, p. e16710716360, 2021. DOI: 10.33448/rsd-v10i7.16360. Disponível em: https://www.rsdjournal.org/rsd/article/view/16360. Acesso em: 5 dec. 2025.