1 Ludwig-Maximilians-Universität Munich, Dr. von Hauner Children's Hospital, University of Munich Medical Center, Munich, Germany. Electronic address: office.koletzko@med.lmu.de.
2 Department of Pediatrics, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania.
3 Scientific Center of Children's Health, Russian Academy of Medical Science, Moscow, Russia.
4 Department of Pediatrics, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey.
5 Department of Pediatrics, University of Split Medical Faculty, Split, Croatia.
6 Department of Pediatrics, St. Mary Children's Emergency Hospital, Jassy, Romania.