title: Myofascial origin of low back pain.
mesh_terms: D001416:Back Pain / Q000188:drug therapy / Q000209:etiology*; D002081:Buttocks / Q000503:physiopathology; D006801:Humans; D007866:Leg / Q000503:physiopathology; D011343:Procaine / Q000627:therapeutic use
chemical_list: D011343:Procaine