Opitz B, Smith P M, Kienzle E, Earle K E, Maskell I E
Institute of Physiology, Biochemistry and Animal Nutrition, Ludwig-Maximilians-University Munich, D-80539 München, Germany.
J Nutr. 1998 Dec;128(12 Suppl):2795S-2797S. doi: 10.1093/jn/128.12.2795S.