The effect of hydrolyzed cow's milk formula for allergy prevention in the first year of life: the German Infant Nutritional Intervention Study; a randomized double-blind trial. - Von Berg,A.; Koletzko,S.; Grubl,A.; Filipiak-Pittroff,B.; Wichmann,H.E.; Bauer,C.P.; Reinhardt,D. (J Allergy Clin Immunol, 2003)