Adwan, H. A., Fadel, A., Naser, Y. F. A., Qaysi, A. A., Qsous, R. and Al-issa R. N., A. O. (2017) “Prevalence of co-morbidities among adult patients presented for open heart surgery and the implication on convalescence period”, International Journal of Advances in Medicine, 4(1), pp. 1–5. doi: 10.18203/2349-3933.ijam20170092.