title: Serum levels following epidural administration of morphine and correlation with relief of postsurgical pain.
mesh_terms: D000368:Aged; D002404:Catheterization; D004824:Epidural Space; D005260:Female; D006801:Humans; D007700:Kinetics; D009020:Morphine / Q000008:administration & dosage* / Q000097:blood; D010149:Postoperative Pain / Q000188:drug therapy*; D011537:Pruritus / Q000139:chemically induced
chemical_list: D009020:Morphine