title: [Letter: Vitamin A-acid in verrucae planae].
mesh_terms: D002338:Carotenoids / Q000009:adverse effects / Q000627:therapeutic use*; D006801:Humans; D014860:Warts / Q000188:drug therapy*
chemical_list: D002338:Carotenoids
vernacular_title: Vitamin A-Säure bei Verrucae planae.