Yontar, Osman Can, Erhan Tenekecioglu, Kemal Karaagac, and Ahmet Tutuncu. “Unusual Cause for Pacemaker Threshold Elevation”. Asian Journal of Medical Sciences 6, no. 1 (July 26, 2014): 106–107. Accessed April 27, 2024. https://www.nepjol.info/index.php/AJMS/article/view/10801.