Indarti, Junita, Mohammad F. Aziz, Bambang Sutrisna, Nuryati C. Siregar, Bethy Suryawati, and Alida Harahap. Medical Journal of Indonesia 19, no. 3 (August 1, 2010). Accessed July 14, 2024. http://mji.ui.ac.id/journal/index.php/mji/article/view/398.