Folic-acid deficiency as a cause of angular cheilosis.
D003677:Deficiency Diseases / Q000150:complications; D005492:Folic Acid / Q000097:blood; D005494:Folic Acid Deficiency / Q000150:complications*; D006801:Humans; D007501:Iron; D009059:Mouth Diseases / Q000209:etiology*
D005492:Folic Acid; D007501:Iron