Sarwar, Madiha, Syed Imran Majeed, Muhammad Khan, Tausif Ahmed, and Faizania Shabbir. 2013. “EFFECT OF AGE AND GENDER ON ARRHYTHMIAS IN PATIENTS WITH CHRONIC HEART FAILURE”. Pakistan Journal of Physiology 9 (2), 11-14. http://pjp.pps.org.pk/index.php/PJP/article/view/366.