1. Department of Pediatrics, Dr. von Hauner Children’s Hospital, University Hospital, LMU Munich, 80337 Munich, Germany
2. Clinical Microbiome Research Group, Department of Internal Medicine I, University Hospital of Cologne, 50931 Cologne, Germany
3. Institute for Microbiology and Hygiene, University Hospital Regensburg, 93053 Regensburg, Germany
4. Chair of Nutrition and Immunology, Technical University Munich, 85354 Freising-Weihenstephan, Germany
5. ZIEL-Institute for Food and Health, Technical University Munich, 85354 Freising-Weihenstephan, Germany
6. Section of Infectious Diseases, Department of Internal Medicine II, University Hospital Frankfurt, Goethe University Frankfurt, 60596 Frankfurt am Main, Germany