Letter: Bioavailability of folate.
D005492:Folic Acid / Q000008:administration & dosage / Q000378:metabolism*; D006801:Humans; D007408:Intestinal Absorption; D007413:Intestinal Mucosa / Q000502:physiology; D007441:Intubation, Gastrointestinal; D007583:Jejunum
D005492:Folic Acid