[Riehl's melanosis and isoniazid].
D003108:Colonic Diseases; D006801:Humans; D007538:Isoniazid / Q000627:therapeutic use*; D008548:Melanosis / Q000628:therapy*
D007538:Isoniazid
ISONIAZID/therapeutic use; MELANOSIS/therapy
Melanosi di Riehl ed idrazide dell'acido nicotinico.