Faiza R, Notobroto HB, Trijanto B, Soedirham O, Yusuf A, Halim K. Influence of prenatal class to the practice of P4K (Birth Planning and Prevention of Birth Complication). MOG [Internet]. 2018 Mar. 31 [cited 2024 Aug. 3];24(3):94-9. Available from: https://e-journal.unair.ac.id/MOG/article/view/7996