A. M. Abul-Fadl AM, M. Darweesh, N. T. Bishr, E. G. Amer, and A. Al-Jawaldeh , Trans., “Passive Smoking is Associated with Risk of Early Onset of Cardiac Dysfunction”, int.jour.sci.res.mana, vol. 8, no. `10, pp. 421–429, Oct. 2020, doi: 10.18535/ijsrm/v8i10.mp03.