Letter: Facial edema, heroin and methadone.
D004487:Edema / Q000139:chemically induced*; D005145:Face; D006556:Heroin Dependence / Q000188:drug therapy*; D006801:Humans; D006967:Hypersensitivity; D008691:Methadone / Q000009:adverse effects* / Q000627:therapeutic use
D008691:Methadone