Cherry, D A A technique for the insertion of an implantable portal system for the long-term epidural administration of opioids in the treatment of cancer pain. [electronic resource] - Anaesthesia and intensive care May 1985 - 145-52 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0310-057X Standard No.: 10.1177/0310057X8501300206 doi Subjects--Topical Terms: Analgesia--methodsAnalgesics, Opioid--administration & dosageCatheters, IndwellingHumansInjections--instrumentationNeoplasms--therapyPain Management