Praptohardjo, Untung, and Susilo Wibowo. “The ‘U’ Technique an Easiest Norplant Removal Procedure”. Medical Journal of Indonesia 3, no. 2 (April 1, 1994): 113–6. Accessed May 10, 2025. https://mji.ui.ac.id/journal/index.php/mji/article/view/955.