title: Medical pain relief; clinical observations of a morphine derivative, metapon hydrochloride.
authors.forename: M W
authors.initials: MW
authors.lastname: MONROE
mesh_terms: D006571:Heterocyclic Compounds; D006801:Humans; D009020:Morphine / Q000628:therapy*; D059408:Pain Management
chemical_list: D006571:Heterocyclic Compounds; D009020:Morphine