Dr Marcus Auth (MD, PD, FRCPCH) is a Consultant Paediatrician specialising in Gastroenterology, Hepatology and Nutrition and has been an Honorary Lecturer at the University of Liverpool since 2008.Dr Auth is a renowned national and European expert in several working groups. He has published more than 70 articles in prestigious journals and given several hundred presentations, including on national audits and guidelines. He is a senior lead gastroenterology consultant with extensive expertise in diagnostic and therapeutic endoscopy, selection and interpretation of appropriate modern investigations for children, and involving other specialists as needed in complex situations.Current positions:Honorary Lecturer at the University of LiverpoolSenior fellow of the Royal College of Paediatric Children Health (FRCPCH)Senior member of the British and European Societies of Paediatric Gastroenterology (BSPGHAN and ESPGHAN)Chair and founder of the Northwest Network for Paediatric Gastroenterology, Hepatology and NutritionConsultant in Paediatric Gastroenterology, Hepatology and Nutrition at Alder Hey Children’s NHS Foundation Trust, Liverpool, UK.