,C.  ,SAPHENOUS VEIN GRAFT TO THE OBTUSE MARGINAL SYSTEM:,  Saphenous vein graft to the obtuse marginal system was widely patent at its origin and insertion sites. 
,C. , SAPHENOUS VEIN GRAFT TO THE OBTUSE MARGINAL SYSTEM : , Saphenous vein graft to the obtuse marginal system was widely patent at its origin and insertion sites .