title: Letter: Ambulatory surgical unit.
mesh_terms: D000671:Amputation, Surgical; D006801:Humans; D007717:Knee / Q000601:surgery*; D011868:Radioisotopes; D012039:Regional Blood Flow; D012867:Skin / Q000098:blood supply*; D014978:Xenon
chemical_list: D011868:Radioisotopes; D014978:Xenon