title: Letter: Proguanil and mouth ulcers.
mesh_terms: D005260:Female; D006801:Humans; D008288:Malaria / Q000188:drug therapy; D008297:Male; D009059:Mouth Diseases / Q000139:chemically induced*; D009549:Nigeria; D002727:Proguanil / Q000009:adverse effects*; D014456:Ulcer / Q000139:chemically induced*
chemical_list: D002727:Proguanil