Professor Hadzic has been one of the leading hepatologists at the world-largest paediatric hepatology unit at King's College Hospital in London, UK for around 30 years. He published over 200 articles, 30 book chapters and edited two textbooks in the field. His areas of special interest include biliary atresia, alpha-1 antitrypsin deficiency and immune-mediated liver disorders such as primary immune deficiencies, autoimmune liver disease and liver transplantation. He has trained a number of paediatric hepatologist worldwide and participated in numerous national and international educational activities.

Nadja Haiden, MD, is a Pediatrician specialized in Neonatology and Pediatric Intensive Care medicine. She is the Head of the Department of Neonatology at the Kepler Universityhospital Linz/Austria, was educated at the Medical University of Vienna and worked as Consultant Neonatal Pediatrician for almost 21 years. Actually, she helps lead a broad portfolio of research based at the MUV and the Kepler Universityhospital Linz. Professor Haiden coordinates the PIES and PREWEAN projects that track the growth and metabolic outcomes of preterm infants after introduction of complementary feeding. Current trials which are also conducted with the Paracelsus Medical University Salzburg include exploring the impact of human milk Micro- RNA and Exsosomes on reparative processes. Further major research interest relates to parenteral and enteral nutrition and human milk. Nadja Haiden has earned grants from Austrian FWF, the Austrian National Bank and the Bürgermeisterfonds of the City of Vienna. Furthermore, she is a faculty member of the Medical University of Vienna, head of the national committee of pediatric nutrition of the Austrian Pediatric Society, head of the national neonatal nutrition committee of the federal ministry of health and an elected member for the ESPGHAN (European Society of Pediatric Gastroenterology, Hepatology and Nutrition) nutrition committee. She has published more than 70 peer reviewed articles and her H-Index is 25 (Google scholar). Further details on publications and research are available from ORCID: https://orcid.org/0000-0003-4806-0312

I have been a qualified Paediatric nurse for over 10 years, working in a variety of settings. In the past 5 years I have been the Ward Manager of the Gastroenterology department, where we perform endoscopies, motility studies, breath tests, and video capsule endoscopies.

Clinical dietitian specialized in paediatrics. Works in paediatric gastroenterology, hepatology and nutrition team. Head dietitian in dietitian-led coeliac clinic. PhD in clinical medicine with research focus on early life dietary factors on the risk of coeliac disease. Member of ESPGHAN AHP committee, and Special Interest Group in Coeliac Disease.

Cesare Hassan, MD, PhD, graduated in Medicine and Surgery in 1994, and he became a specialist in Gastroenterology and Digestive Endoscopy at ‘Sapienza University’ in Rome in 1998. His clinical and research turned mainly to the development of new approach for colorectal cancer screening, mainly focusing on clinical validation, cost-effectiveness and decision-making, as well as for prevention of upper GI-cancer, including endoscopic and medical treatment of pre-malignant gastric conditions and Barrett oesophagus. To date, his work has resulted in over 500 peer-reviewed publications, and is regularly invited to present at major national and international meetings. Dr. Hassan is currently the Treasurer of the European Society of Gastrointestinal Endoscopy, where he also served as Chair of the Guideline Committee, and he is Associated Professor of Gastroenterology at Humanitas University (Milan, Italy). His current research focuses on implementation of Artificial Intelligence for detection, characterization, and Quality Improvement of diagnostic endsocopy.

Dr Almuthe Christina Hauer is Assoc. Professor at Graz Medical University, where she implemented a certified Educational Center for Ped. Gastroenterology, Hepatology and Nutrition. As chair of the Austrian PGHN society she succeeded in the recognition of PGHN as a Pediatric Subdisciplin on a governmental level. From 2017-2020 she was the ESPGHAN International Affairs Representative, served as the Congress President of the 6th World Congress of Pediatric Gastroenterology, Hepatology and Nutrition (in Vienna, virtual) in 2021, and is currently chair of the Local organising Committee of the 55th Annual Meeting of ESPGHAN in Vienna. As Co-Director of the American Austrian Foundation and ESPGHAN Faculty of many Summer Schools she has lectured extensively, e.g. in former Eastern Europe and beyond. One of her clinical and scientific interests is therefore the management of PedGI diseases in more limited resource set-ups, a topic she pursued both as a member of the Porto IBD Group of ESPGHAN and within European Multicentre Studies incl. the EU-project “CD skills” re Coeliac Disease.

Dr Robert Hegarty is a consultant paediatric hepatologist at King’ College Hospital, London. He completed his training in hepatology in 2018 before undertaking an MD(Res) degree investigating the genetics of acute liver failure in children. He continues to be an active clinical researcher in paediatric hepatology with an interest in genetics of children with liver disease. He is a member of Research and Young ESPGHAN Committees with an active role in education and research development.

Jan M. Heijdra Suasnabar is a junior Health Economist at the Leiden University Medical Center in the Netherlands. His work focuses mostly on estimating the value for money (i.e. cost-effectiveness) of healthcare interventions in order to inform decisions about resource allocation in the healthcare sector. He holds an MSc in Public Health from the London School of Hygiene and Tropical Medicine. Most recently, as part of the GLUTENSCREEN project, Jan and colleagues evaluated the long-term cost-effectiveness of point-of-care testing for Coeliac disease (CD) in children in the Netherlands. This involved modelling the lifetime costs and outcomes of children with CD according to three competing strategies: current practice (i.e. clinical detection), mass-screening, and active case-finding based on presented symptoms. More information about GLUTENSCREEN can be found at www.glutenscreen.nl