Radmehr H, Bakhshandeh A, Salehi M, Ghorbandaeipour I, Sadeghpoor Tabai AH, Sanatkarfar M, Nasr AR. Postoperative Mortality and Morbidity in Elderly Patients Undergoing Coronary Artery Bypass Graft Surgery. J Tehran Heart Cent. 1;3(4):215-218.