title: New portable infusion pump for prolonged subcutaneous administration of opioid analgesics in patients with advanced cancer.
mesh_terms: D003932:Heroin / Q000008:administration & dosage*; D006801:Humans; D007263:Infusions, Parenteral / Q000295:instrumentation*; D009369:Neoplasms / Q000628:therapy*; D010146:Pain / Q000517:prevention & control*
chemical_list: D003932:Heroin