1. World Health Organization (WHO) https://www.who.int/news-room/fact-sheets/detail/maternal-mortality. Accessed 2022/4/26
2. Data and information Center the Ministry of Health the Republic of Indonesia. https://www.kemkes.go.id/article/view/15021800009/situasi-kesehatan-ibu.html. Accessed 2022/4/26
3. Data and information Center The Ministry of Health the Republic of Indonesia. https://pusdatin.kemkes.go.id/resources/download/pusdatin/profil-kesehatanindonesia/PROFIL_KESEHATAN_2018_1.pdf. Accessed 2022/4/26
4. The Ministry of Health the Republic of Indonesia https://sehatnegeriku.kemkes.go.id/baca/umum/20210914/3738491/kemenkes-perkuat-upaya-penyelamatan-ibu-dan-bayi/. Accessed 2022/4/26
5. The United Nations Children’s Fund (UNICEF) https://data.unicef.org/topic/maternal-health/antenatal-care/. Accessed 2022/4/26