title: Perceptions of pain relief after surgery.
mesh_terms: D000698:Analgesia / Q000379:methods*; D000700:Analgesics / Q000008:administration & dosage; D004334:Drug Administration Schedule; D006801:Humans; D010147:Pain Measurement; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D000700:Analgesics