ULFAH, S.; LUBIS, F. H.; RISMADI, K.; HAMZAH, D. F. The Sociodemographic Factors and Accessibility in Utilizing the Maternal and Child Health Handbook for Monitoring Under-Five Children in North Sumatera. Journal Medical Informatics Technology, [S. l.], v. 4, n. 2, p. 57–63, 2026. DOI: 10.37034/medinftech.v4i2.149. Disponível em: https://medinftech.org/index.php/medinftech/article/view/149. Acesso em: 1 jul. 2026.