B Koletzko, R von Kries, R Closa, J Escribano, S Scaglioni, M Giovannini, J Beyer, H Demmelmair, D Gruszfeld, A Dobrzanska, A Sengier, J. P Langhendries, M. F Rolland Cachera and V. Grote
American Journal of Clinical Nutrition 89 ( 6 ): 1836 - 1845 , 2009