Osman Can Yontar, 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 October 15, 2025. http://ajmsjournal.info/index.php/AJMS/article/view/3457.