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.
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.