title: Letter: Folic acid deficiency during intensive therapy.
mesh_terms: D005492:Folic Acid / Q000627:therapeutic use; D005494:Folic Acid Deficiency / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D007362:Intensive Care Units; D010288:Parenteral Nutrition / Q000009:adverse effects
chemical_list: D005492:Folic Acid