Impact of the COVID-19 pandemic on Prenatal, Diabetes and medical appointments in the Brazilian National Health System. SciELO Preprints, 2021. DOI: 10.1590/1980-549720210013. Disponível em: https://preprints.scielo.org/index.php/scielo/preprint/view/1953. Acesso em: 8 nov. 2026.