title: Severe segmental obstruction of the left main coronary artery and its divisions. Surgical treatment by the saphenous vein graft technique.
mesh_terms: D001158:Arteries / Q000601:surgery*; D003327:Coronary Disease / Q000601:surgery*; D003331:Coronary Vessels / Q000601:surgery*; D006801:Humans; D012501:Saphenous Vein / Q000637:transplantation*