1. Hepatitis Unit, National Center of Microbiology ISCIII Madrid Spain
2. Gastrointestinal and Liver services Royal Surrey County Hospital and University of Surrey Guildford UK
3. Gastroenterology department Hospital del Sureste Madrid Spain
4. Gastroenterology department Hospital Infanta Cristina Madrid Spain
5. Gastroenterology department Hospital Infanta Sofia Madrid Spain
6. Queen's Medical Centre, Nottingham Children's Hospital Nottingham University Hospitals NHS Trust Nottingham UK
7. BR Salud Laboratory Madrid Spain
8. Liver Unit, The Newcastle upon Tyne Hospitals NHS Foundation Trust and The Institute of Cellular Medicine Newcastle University Newcastle UK
9. Nottingham Digestive Diseases Centre NIHR Nottingham BRC at the Nottingham University Hospitals NHS Trust and University of Nottingham Nottingham UK
10. Gastrointestinal and Liver services Barking Havering and Redbridge University NHS Trust Romford UK
11. Servicio de Medicina Interna, Facultad de Medicina, Instituto de Investigación Sanitaria Gregorio Marañón (IiSGM), Hospital Universitario Infanta Leonor (HUIL) Universidad Complutense de Madrid (UCM) Madrid Spain
12. Gastroenterology department Hospital del Henares Madrid Spain
13. Barts Liver Centre, Barts and The London School of Medicine and Dentistry Blizard Institute London UK