title: [Oral administration of methadone to patients with chronic pain].
mesh_terms: D000284:Administration, Oral; D002908:Chronic Disease; D006801:Humans; D008691:Methadone / Q000008:administration & dosage*; D010146:Pain / Q000188:drug therapy*
chemical_list: D008691:Methadone
vernacular_title: Administración oral de metadona a pacientes con dolor crónico.