Refaat, M. M., N. El Jamal, H. M. El-Rayess, A. Gebran, and A. M. Salam. “The Impact of Diurnal Fasting During Ramadan on Patients With Established Cardiac Disease: A Systematic Review”. Global Cardiology, vol. 2, no. 2, June 2024, doi:10.4081/cardio.2024.32.