Naveed Abbas, Hafiz Yasir Rehman, Faud Ahmed Siddique, Abid Sharif, Abdul Rehman, and Fawad Ahmad, “Diagnostic Accuracy of Apex-Pulse Deficit for Detecting Atrial Fibrillation”, Pak Armed Forces Med J, vol. 74, no. 4, pp. 1129–1132, Aug. 2024, doi: 10.51253/pafmj.v74i4.11531.