title: Leg revascularization in the absence of the greater saphenous vein: alternatives and strategies. Introduction.
mesh_terms: D000800:Angioplasty, Balloon; D001807:Blood Vessel Prosthesis; D006801:Humans; D007511:Ischemia / Q000601:surgery*; D007866:Leg / Q000098:blood supply*; D011138:Polytetrafluoroethylene; D012501:Saphenous Vein / Q000637:transplantation
chemical_list: D011138:Polytetrafluoroethylene