Khan UA, Coca SG, Hong K, Koyner JL, Garg AX, Passik CS, Swaminathan M, Garwood S, Patel UD, Hashim S, Quantz MA, Parikh CR. Blood transfusions are associated with urinary biomarkers of kidney injury in cardiac surgery. J Thorac Cardiovasc Surg. 2014 Aug; 148(2):726-32.