1. From the Division of Metabolic Diseases and Nutritional Medicine, Dr von Hauner Children Hospital, Ludwig Maximilians University of Munich, Munich, Germany (EL, MK, HD, and BK); Clinical Cooperation Group Paediatric Immune Regulation, Ludwig Maximilians University of Munich and GSF National Research Center for Environment and Health, Munich, Germany (SK-E and DH); the Departments of Biochemistry