Rational use of vitamins.
D000328:Adult; D000368:Aged; D001361:Avitaminosis / Q000139:chemically induced / Q000188:drug therapy; D002648:Child; D005260:Female; D006801:Humans; D007223:Infant; D011247:Pregnancy; D014815:Vitamins / Q000627:therapeutic use*
D014815:Vitamins