Kartikasari, Mayriyana, and Lukman Aktovianta. “Meta-Analysis: The Effect of Waterbirth Delivery Method on the Risk of Perineal Rupture”. Journal of Epidemiology and Public Health 6, no. 4 (October 16, 2021): 505–520. Accessed May 14, 2024. https://www.jepublichealth.com/index.php/jepublichealth/article/view/454.