Application of the PDCA tool: A case study in the telephone sector of the municipal health department of northeastern Brazil. Research, Society and Development, [S. l.], v. 13, n. 9, p. e7813946888, 2024. DOI: 10.33448/rsd-v13i9.46888. Disponível em: https://ojs34.rsdjournal.org/index.php/rsd/article/view/46888. Acesso em: 28 jun. 2025.