1. Gastroenterology and Hepatology Department, Clinical and Translational Research in Digestive Diseases, Valdecilla Research Institute (IDIVAL) Marqués de Valdecilla University Hospital Santander Spain
2. Gastroenterology and Hepatology Department, Puerta de Hierro University Hospital, Puerta de Hierro Majadahonda Research Institute (IDIPHIM) Autonomous University of Madrid Madrid Spain
3. Microbiology Department San Cecilio Clinic University Hospital, Biosanitary Research Institute of Granada (IBIS) Granada Spain
4. CIBER infectious Diseases (CIBERINFEC) Madrid Spain
5. Microbiology Department, Santiago de Compostela Clinic University Hospital, Microbiology and Parasitology Department Santiago de Compostela University A Coruña Spain
6. Gastroenterology and Hepatology Department University Hospital of Leon, IBIOMED and CIBERehd León Spain
7. Barcelona Institute of Global Health (ISGlobal) Hospital Clínic Barcelona Spain
8. Faculty of Medicine and Health Sciences University of Barcelona Barcelona Spain
9. CUNY Graduate School of Public Health and Health Policy (CUNY SPH) New York New York USA