ARDIYANTI, S.; MUFDLILAH, M.; KUSUMAWATI, W.; NUGROHO, W. S. WhatsApp group increase antenatal visit. International Journal of Health Science and Technology, [S. l.], v. 2, n. 1, p. 1–6, 2021. DOI: 10.31101/ijhst.v2i1.1817. Disponível em: https://ejournal.unisayogya.ac.id/index.php/ijhst/article/view/1817. Acesso em: 3 may. 2024.