Pediatr Infect Dis J 2014 Nov;33(11):e299-304
From the *Department of Pediatrics, John Radcliffe Hospital, Oxford, United Kingdom; †University Hospital for Children and Adolescents, Martin Luther University, Halle; ‡Institute of Medical Statistics, Frankfurt/Main; §University Hospital for Children and Adolescents, University of Leipzig, Leipzig; ¶Dr von Hauner Children's Hospital, Ludwig Maximilian University of Munich, Munich, Germany; and ‖Translational Gastroenterology Unit, University of Oxford, Oxford, United Kingdom.