title: Letter: Tretinoin treatment of leg ulcers.
mesh_terms: D000368:Aged; D005231:Fatty Acids, Unsaturated / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use; D005260:Female; D006801:Humans; D007871:Leg Ulcer / Q000188:drug therapy*; D008297:Male; D008875:Middle Aged; D009824:Ointments; D014801:Vitamin A / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D005231:Fatty Acids, Unsaturated; D009824:Ointments; D014801:Vitamin A