¹National Institute of Medical Science and Nutrition Salvador Zubiran, Department of Gastroenterology, Mexico City, Mexico, ²IBD Clinic, Department of Gastroenterology, Instituto Nacional de Ciencias Medicas y Nutricion, Gastroenterology, Mexico, Mexico

¹Tel Aviv Sourasky Medical Center, Department of Radiology, Tel Aviv, Israel, ²Tel Aviv University, The Sackler Faculty of Medicine, Tel Aviv, Israel, ³Tel Aviv Sourasky Medical Center, Department of Pediatric Gastroenterology, Tel Aviv, Israel

¹Sourasky Medical Center, Tel Aviv-Israel, Pediatric Gastroenterology, Tel Aviv, Israel, ²The Hebrew University, Institute of Biochemistry, Food Science and Nutrition, the Robert H Smith Faculty of Agriculture- Food and Environment, Rehovot, Israel, ³Rabin Medical Center, Division of Gastroenterology, Petah Tikva, Israel, ⁴Sourasky Medical Center, Tel Aviv-Israel, Sleep Disorders Center, Tel Aviv, Israel

¹University ‘Tor Vergata’ of Rome, Systems Medicine, Roma, Italy, ²University ‘Tor Vergata’ of Rome, Pathology Unit, Roma, Italy, ³Lazio Regional Health Service, Department of Epidemiology, Rome, Italy

¹Icahn School of Medicine- Mount Sinai Hospital, Pediatric GI and Nutrition, New York City, USA, ²Eli Lilly and Company, Global Patient Outcomes and Real World Evidence, Indianapolis, USA, ³Eli Lilly and Company, Global Statistical Sciences, Indianapolis, USA, ⁴Eli Lilly and Company, Gastroenterology, Indianapolis, USA, ⁵Guy’s and St Thomas’ NHS Foundation Trust, Gastroenterology, London, UK

¹Lithuanian University of Health Science, Radiology department, Kaunas, Lithuania, ²Lithuanian University of Health Science, Gastroenterology department, Kaunas, Lithuania

Gastroenterology Unit, Hospital Universitario de La Princesa. Instituto de Investigación Sanitaria Princesa IIS-IP, Universidad Autónoma de Madrid. Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas CIBEREHD, Gastroenterology Unit, Madrid, Spain

¹LIthuanian University of Health Science, Radiology department, Kaunas, Lithuania, ²LIthuanian University of Health science, Gastroenterology department, Kaunas, Lithuania

CHU Estaing, Department of Digestive and Hepatobiliary Medicine, Department of Gastroenterology, Clermont-Ferrand, France

¹CHU Saint Etienne – Hospital Nord, Department of Gastroenterology and Hepatology, Inserm, CIC1408, Saint Priest en Jarez, France, ²CHU Saint Etienne – Hospital Nord, Radiology, Saint Priest en Jarez, France, ³CHU Lyon Sud, Department of Gastroenterology and Hepatology, Lyon, France, ⁴CHU Saint Etienne, Hospital Nord, Immunology, Saint Priest en Jarez, France

Hospital Beatriz Ângelo, Surgery Department, Gastroenterology Division, Lisbon, Portugal

¹San Juan de Dios Hospital, Gastroenterology Department – IBD Fellow Clínica Las Condes, Santiago, Chile, ²Clínica Las Condes, Gynecology and Obstetrics Department, Santiago, Chile, ³Clínica Las Condes, Gastroenterology Department – Inflammatory Bowel Disease Program, Santiago, Chile, ⁴Clínica Las Condes, Surgery Department, Colorectal Unit – Inflammatory Bowel Disease Program, Santiago, Chile

¹St Mark’s Hospital, Department of Gastroenterology, London, UK, ²National Institute for Health Research, Applied Research Collaborations, Northwest London, UK, ³Patient Information Forum, Head of Strategy and Partnership, London, UK, ⁴Crohns and Colitis UK, Publications and Information Manager, London, UK

¹Queen Elizabeth Hospital Birmingham, Gastroenterology, Birmingham, UK, ²St Mark’s Hospital, IBD Unit, Harrow, UK, ³NHS Forth Valley, Gastroenterology, Stirling, UK, ⁴Plymouth Hospitals NHS Trust, Gastroenterology, Plymouth, UK, ⁵University Hospitals Birmingham NHS Foundation Trust, Gastroenterology, Birmingham, UK, ⁶AbbVie Ltd., Medical, Maidenhead, UK, ⁷Royal Devon and Exeter Hospital, Gastroenterology, Exeter, UK

¹CHU Estaing, Department of Digestive and Hepatobiliary Medicine- Department of Gastroenterology, Clermont-Ferrand, France, ²CHU Lyon-Sud, Gastroenterology, Lyon, France, ³Fondazione Policlinico A. Gemelli IRCCS- Rome- Italy, IBD Unit Presidio Columbus, Rome, Italy, ⁴Helsinki University Hospital- Meilahti Hospital, Hus, Helsinski, Finland, ⁵Federal University of São Paulo–UNIFESP-, Gastroenterology, Sao Paulo, Brazil, ⁶CHU, Biostatistics unit, Clermont-Ferrand, France

¹Lebanese university- school of medecine, Gastroenterology, Beirut, Lebanon, ²Lebanese university- school of medecine, Gastroenterology, Hadath, Lebanon, ³Lebanese university- school of medecine, Internal medecine, Hadath, Lebanon, ⁴Lebanese uniiversity- school of medecine, internal medecine, Hadath, Lebanon

¹IRCCS Sacro Cuore Don Calabria Hospital- Negrar-, Department of Pathology, Negrar, Italy, ²Mt Sinai Hospital, Pathology-, Toronto, Canada, ³IRCCS Sacro Cuore Don Calabria Hospital- Negrar, Medicine, Verona, Italy, ⁴IRCCS Sacro Cuore Don Calabria Hospital- Negrar, Clinical Pathology, Verona, Italy, ⁵IRCCS Sacro Cuore Don Calabria Hospital- Negrar, Pathology, Verona, Italy, ⁶Mt Sinai Hospital, Pathology, Toronto, Canada

¹Federico II University of Naples, Department of Clinical Medicine- Gastroenterology and Surgery, Naples, Italy, ²Infective Diseases Unit- School of Medicine Federico II of Naples, Department of Clinical Medicine and Surgery, Naples, Italy

¹Clinical Hospital Centre Zagreb, Department of Gastroenterology and Hepatology, Zagreb, Croatia, ²Zagreb School of Medicine, Department of Gastroenterology and Hepatology, Zagreb, Croatia, ³Zagreb School of Medicine, University of Zagreb, Zagreb, Croatia, ⁴Unit for Clinical Nutrition, Department of Gastroenterology and Hepatology, Zagreb, Croatia, ⁵Clinical Hospital Merkur, Department of Gastroenterology and Hepatology, Zagreb, Croatia, ⁶School of Medicine Rijeka, University of Rijeka, Rijeka, Croatia

¹ASST Papa Giovanni XXIII, Pediatric Hepatology Gastroenterology and Transplatation, Bergamo, Italy, ²ASST Papa Giovanni XXIII, FROM Research Foundation, Bergamo, Italy, ³G. Gaslini Institute - IRCCS, Gastroenterology- Digestive Endoscopy and Nutrition Unit, Genova, Italy, ⁴Institute of Child and Maternal Health - IRCCS ‘Burlo Garofolo’, Institute of Child and Maternal Health - IRCCS ‘Burlo Garofolo’, Trieste, Italy, ⁵marco.deganello@gmail.com, Pediatric Department, Verona, Italy, ⁶Sapienza University of Rome- Sant’Andrea University Hospital, Pediatrics- NESMOS Department- School of Medicine and Psychology, Rome, Italy, ⁷’S. Spirito’ Hospital, Pediatric Gastroenterology and Endoscopy Unit, Pescara, Italy, ⁸University of Naples ‘Federico II’, Department of Translational Medical Science- Section of Pediatrics, Naples, Italy, ⁹’Mayer’ Hospital, Pediatric Gastroenterology and Endoscopy Unit, Florence, Italy, ¹⁰University of Messina, Pediatric Gastroenterology and Cystic Fibrosis Unit, Messina, Italy, ¹¹Bambino Gesù Children Hospital- IRCCS, Digestive Endoscopy and Surgery Unit, Rome, Italy, ¹²Mauriziano Hospital Turin, Gastroenterology Unit, Turin, Italy, ¹³Sapienza – University of Rome, Pediatric Gastroenterology and Liver Unit- Maternal and Child Department, Rome, Italy