Scheurer MA, Hill EG, Vasuki N, Maurer S, Graham EM, Bandisode V, Shirali GS, Atz AM, Bradley SM. Survival after bidirectional cavopulmonary anastomosis: analysis of preoperative risk factors. J Thorac Cardiovasc Surg. 2007 Jul; 134(1):82-9, 89.e1-2.