SURYANI, E.; FATIMAH, F.; SIREGAR, R. J.; HARAHAP, M. L. Determinants of First-Trimester Antenatal Care Delay in Indonesia’s Disadvantaged Regions: A Cross-Sectional Study of Socioeconomic Barriers in South Tapanuli. International Journal of Public Health Excellence (IJPHE), [S. l.], v. 5, n. 1, p. 38–41, 2025. DOI: 10.55299/ijphe.v5i1.1100. Disponível em: https://ejournal.ipinternasional.com/index.php/ijphe/article/view/1100. Acesso em: 7 dec. 2025.