1. Research, Central Texas Veterans Health Care System Temple Texas USA
2. Department of Medical PhysiologyTexas A&M UniversityCollege of Medicine Temple Texas USA
3. Baylor Scott & White Health Digestive Disease Research CenterBaylor Scott & White Health Temple Texas USA
4. Humanitas Clinical and Research Center Rozzano MI Italy
5. Division of Rheumatology, Allergy, and Clinical ImmunologyUniversity of California‐Davis Davis California USA
6. Eleonora Lorillard Spencer Cenci Foundation Rome Italy
7. Department of Internal Medicine and Medical SpecialtiesSapienza University of Rome Rome Italy
8. Clinic of Gastroenterology and HepatologyUniversita Politecnica delle Marche Ancona Italy
9. Department of Anatomical, Histological, Forensic Medicine and Orthopedics SciencesSapienza University of Rome Rome Italy
10. Department of Pathology, Microbiology, and ImmunologyVanderbilt University School of Medicine Nashville Tennessee USA
11. Department of Molecular MedicineUniversity of Padua School of Medicine Padua Italy
12. Digestive Disease SectionYale University School of Medicine New Haven Connecticut USA