Elameen, S., A. Salem, A. Abdelgawad, A. El shemy, S. Taha, and I. Abdelsalam. “Prevalence of Coronary Artery Lesion(S) in Pati Ents Aged 40-50 Years Undergoing Rheumatic Valvular Surgery”. European Scientific Journal, ESJ, Vol. 14, no. 6, Feb. 2018, p. 363, doi:10.19044/esj.2018.v14n6p363.