Munawar, Muhammad, Ingrid Pardede, Dian L. Munawar, and Jimmy Pambudi. “Twiddler’s Syndrome in Patient With Single Chamber Pacemaker”. Medical Journal of Indonesia 20, no. 4 (November 1, 2011): 295-7. Accessed March 29, 2024. http://mji.ui.ac.id/journal/index.php/mji/article/view/463.