Harahap, M. L. and Abdullah, E. (2026) “The effectiveness of smart card education (early detection of preeclamsia risk) on the level of knowledge of pregnant wom-en in Padangsidimpuan city Indonesia”, Proceedings: Indunisiya, 1(1), pp. 43–59. Available at: https://ipi-limited.com/index.php/proceedings-indunisiya/article/view/45 (Accessed: 12 July 2026).