scientific article
author: Elvira Verduci, Piotr Socha, Dariusz Gruszfeld, Veit Grote, Berthold Koletzko, Richard Saffery, Ricardo Closa-Monasterolo, Jean-Paul Langhendries, Peter Rzehak, Enrica Riva, Annick Xhonneux, Eva Reischl, Marcela Covic, Simone Wahl, Natalia Ferré