Saragih, Erita. “Factors Affecting The Low Interest Of Vasectomy Acceptors In Sigumpar Village Sigumpar District, Toba Regency Year 2021”. Science Midwifery 10, no. 1, October (October 20, 2021): 296–301. Accessed June 19, 2026. https://midwifery.iocspublisher.org/index.php/midwifery/article/view/191.