Aprilasari, Mariana, Sunarto Sunarto, and Hery Sumasto. “Hubungan Usia Ibu Hamil Dan Paritas Dengan Kejadian Hiperemesis Gravidarum Di Wilayah Kerja Puskesmas Padas Kabupaten Ngawi: The Relationship Between Pregnant Women’s Age and Parity With the Incidence of Hyperemesis Gravidarum in the Working Area of the Padas Health Center, Ngawi Regency”. Gema Bidan Indonesia 10, no. 2 (September 30, 2021). Accessed June 9, 2025. https://gebindo.poltekkes-surabaya.ac.id/index.php/gebindo/article/view/8.