Prama, Syerly Ompu, Sendy Pratiwi Ramadhani, and Turiyani. 2022. “The Relationship Of Characteristics Of Pregnant Women In Trimester 1 With The Event Of Hyperemesis Gravidarum In Shafaa Marwa Clinic, Batam City In 2020”. Science Midwifery 10 (2):863-70. https://www.midwifery.iocspublisher.org/index.php/midwifery/article/view/371.