Saldanha Leila G, Dwyer Johanna T, Andrews Karen W, Bailey Regan L, Gahche Jaime J, Hardy Constance J, Holden Joanne M, Picciano Mary Frances, Roseland Janet M, Thomas Paul R, Wolf Wayne R
Office of Dietary Supplements, National Institutes of Health, Alexandria, VA, USA.
J Am Diet Assoc. 2010 Oct;110(10):1426, 1428, 1430-1. doi: 10.1016/j.jada.2010.08.013.