Retrograde fractional flow reserve and recanalization of a chronic total occlusion of a saphenous venous graft.
Singla S, Uretsky BF, Sachdeva R. Retrograde fractional flow reserve and recanalization of a chronic total occlusion of a saphenous venous graft. Catheter Cardiovasc Interv. 2012 Dec 01; 80(7):1210-5.