title: [Morphine and meperidine. Comparative analysis of their use in epidural analgesia].
mesh_terms: D000328:Adult; D000700:Analgesics / Q000008:administration & dosage*; D000767:Anesthesia, Epidural / Q000379:methods*; D004341:Drug Evaluation; D005260:Female; D006801:Humans; D008297:Male; D008614:Meperidine / Q000008:administration & dosage*; D008875:Middle Aged; D009020:Morphine / Q000008:administration & dosage*; D010149:Postoperative Pain / Q000188:drug therapy*
chemical_list: D000700:Analgesics; D009020:Morphine; D008614:Meperidine
vernacular_title: Morfina y meperidina. Analisis comparativo de su uso en analgesia epidural.