Coronary bypass graft fate and patients outcome: angiographic follow up of 5065 grafts related to survival and reoperation in 1388 patients during 25 years. - Fitzgibbon,G.M.; Kafka,H.P.; Leach,A.J.; Keon,W.J.; Hooper,G.D.; Burton,J.R. (J Am Coll Cardiol, 1996)