Pardede, Ingrid M., and Yoga Yuniadi. “A Novel Non Invasive Measurement of Hemodynamic Parameters: Comparison of Single-Chamber Ventricular and Dual-Chamber Pacemaker”. Medical Journal of Indonesia 17, no. 1 (February 1, 2008): 25-32. Accessed April 20, 2024. http://mji.ui.ac.id/journal/index.php/mji/article/view/295.