Cherry, D A Drug delivery systems for epidural administration of opioids. [electronic resource] - Acta anaesthesiologica Scandinavica. Supplementum 1987 - 54-9 p. digital Publication Type: Journal Article ISSN: 0515-2720 Standard No.: 10.1111/j.1399-6576.1987.tb02670.x doi Subjects--Topical Terms: Catheters, IndwellingEquipment DesignHumansInfusion PumpsInjections, Epidural--instrumentationNarcotics--administration & dosage