title: Controlling chronic pain.
mesh_terms: D000328:Adult; D001943:Breast Neoplasms / Q000150:complications*; D005260:Female; D003932:Heroin / Q000008:administration & dosage*; D006801:Humans; D007273:Injections, Intramuscular; D010148:Intractable Pain / Q000188:drug therapy*; D012646:Self Administration
chemical_list: D003932:Heroin