title: Oral morphine for relief of chronic pain from cancer.
mesh_terms: D000284:Administration, Oral; D002986:Clinical Trials as Topic; D003932:Heroin / Q000008:administration & dosage / Q000627:therapeutic use; D006801:Humans; D009020:Morphine / Q000008:administration & dosage* / Q000627:therapeutic use; D009369:Neoplasms / Q000150:complications*; D010148:Intractable Pain / Q000188:drug therapy*
chemical_list: D003932:Heroin; D009020:Morphine