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Division of Metabolic and Nutritional Medicine (F.F.K., U.H., M.W., V.G., H.D., W.P.,
P.R., B.K., C.H.), Dr von Hauner Children's Hospital, 80337 Munich, Germany; Centre
Hospitalier Chrétien St Vincent (A.X.), 4000 Liège-Rocourt, Belgium; Department of
Paediatrics (C.C.), University Children's Hospital Queen Fabiola, Université Libre
de Bruxelles, 1020 Brussels, Belgium; Paediatrics Research Unit (N.F., J.E.), Universitat
Rovira i Virgili, 43201 Reus, Spain; Department of Paediatrics (E.V.), San Paolo Hospital,
University of Milan, 20142 Milano, Italy; and Neonatal Intensive Care Unit (P.S.,
D.G.), Children's Memorial Health Institute, 04-736 Warsaw, Poland.