Ningsih, S. S., D. H. Sari, R. D. Antarianto, N. S. Hardiany, M. Sadikin, S. I. Wanandi, and S. W. Jusman. Medical Journal of Indonesia, Vol. 27, no. 3, Oct. 2018, https://mji.ui.ac.id/journal/index.php/mji/article/view/1920.