•President, Federation of International Societies for Paediatric Gastroenterology, Hepatology & Nutrition (www.fispghan.org), 2016-2020
• President Elect, International Society for Research in Human Milk and Lactation
(www.isrhml.com/) (2018-2020, President 2020-2022)
• Chair, Tertiary Care Council and Member of the Executive Committee, European Academy of
Paediatrics / Union of European Medical Specialists – Section of Paediatrics (2018-2020)
(www.eapaediatrics.eu)
• Member, Central Grant Review Board Medicine, German Research Council – Deutsche
Forschungsgemeinschaft (www.dfg.de) (2012-2020)
• Chair, Grant Review Board Clinical Trials, German Research Council -
Deutsche Forschungsgemeinschaft (www.dfg.de), (2016-2020)
• Co-ordinator, EU FP7 EarlyNutrition Project (project-earlynutrition.eu) (2011-2018)
• Co-ordinator, ESPEN Network Project on Disease Associated Malnutrition in Children
• Chair of the Scientific Board, National Network “A healthy start into life” of the German
Federal Government (ww.gesund-ins-leben.de) (since 2009)
• Managing Director, Early Nutrition Academy (www.early-nutrition.org) (since 2004)
• Chair, Committee on Nutrition, German Society Paediatrics (www.dgkj.de) (since 2001)
• Chairman of the Board, Child Health Foundation (www.kindergesundheit.de/) (since 1996)
• Strategic Technical Advisor on Nutrition, the International Pediatric Association (2017-2019)
• Council Member, United European Gastroenterology (www.ueg.eu), 2016-2020
• Past President, European Society Paediatric Gastroenterology, Hepatology & Nutrition
(www.espghan.org) (President 2013-2016)