Aadil Memon, Umera Ali, Asmat, Sonam, Rakesh Kumar, and Sattar Jamali, “Frequency of Hyperkalemia in Patients Presenting with Heart Failure with Reduced Ejection Fraction at Tertiary Care Hospital Karachi”, JHRR, vol. 4, no. 2, pp. 1682–1686, Jun. 2024.