Rafla, Samir, Ahmed Mokhtar, and Amr Kamal. “ECG Interpretation and Commentary”. Journal of Cardiology and Cardiovascular Medicine 5, no. 1 (February 18, 2020): 034–041. Accessed December 5, 2025. https://www.cardiologymedjournal.com/index.php/jccm/article/view/jccm-aid1083.