Folate intake and blood folate in elderly subjects, a study using the double sampling portion technique.
D000367:Age Factors; D000368:Aged; D005260:Female; D005492:Folic Acid / Q000008:administration & dosage / Q000097:blood; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009747:Nutritional Physiological Phenomena; D009751:Nutritional Requirements
D005492:Folic Acid