title: The mechanisms of ultra-low dose opioid agonist-antagonist.
authors: Chih-Shung
authors: CS
authors: Wong
mesh_terms: D016058:Analgesia, Patient-Controlled; D000701:Analgesics, Opioid / Q000008:administration & dosage*; D005260:Female; D006801:Humans; D009020:Morphine / Q000008:administration & dosage*; D009266:Nalbuphine / Q000008:administration & dosage*; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D000701:Analgesics, Opioid; D009020:Morphine; D009266:Nalbuphine