title: Comparison of continuous and intermittent papaveretum after cholecystectomy.
mesh_terms: D000700:Analgesics; D006801:Humans; D009892:Opium / Q000008:administration & dosage* / Q000494:pharmacology; D010149:Postoperative Pain / Q000188:drug therapy*; D012119:Respiration / Q000187:drug effects*
chemical_list: D000700:Analgesics; D009892:Opium