title: Why does placebo improve severe limb ischaemia?
mesh_terms: D001785:Blood Gas Monitoring, Transcutaneous; D001794:Blood Pressure / Q000187:drug effects; D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D006801:Humans; D007511:Ischemia / Q000097:blood / Q000188:drug therapy*; D007866:Leg / Q000098:blood supply*; D009257:Nafronyl / Q000627:therapeutic use; D010919:Placebos / Q000627:therapeutic use*; D011897:Random Allocation
chemical_list: D010919:Placebos; D009257:Nafronyl