Sandström B, Fairweather-Tait S, Hurrell R, van Dokkum W
Reseach Department of Human Nutrition, Royal Veterinary and Agricultural University, Rolighedsvej 25, DK-1958 Frederiksberg C, Denmark.
Nutr Res Rev. 1993 Jan;6(1):71-95. doi: 10.1079/NRR19930007.