title: Construction of a composite sequential bypass graft.
mesh_terms: D001807:Blood Vessel Prosthesis; D006801:Humans; D007866:Leg / Q000098:blood supply; D008722:Methods; D011138:Polytetrafluoroethylene; D012501:Saphenous Vein / Q000637:transplantation*
chemical_list: D011138:Polytetrafluoroethylene