Safitri, Denanda Agnes, Setyo Sri Rahardjo, and Bhisma Murti. 2020. “Effects of Peer-Based Intervention on Prevention Behavior of Sexually Transmitted Infections and Unwanted Pregnancy in Adolescents: A Meta Analysis”. Journal of Maternal and Child Health 5 (6):693-704. http://thejmch.com/index.php/thejmch/article/view/510.