1. Department of Medicine, Division Gastroenterology, Texas A&M Health Science Center, College of Medicine, TX, USA
2. Division of Research, Central Texas Veterans Health Care System, TX, USA
3. Scott & White Digestive Disease Research Center, TX, USA
4. Division of Research and Education, Scott & White, Temple, TX 76504, USA
5. Department of Gastroenterology, Università Politecnica delle Marche, Ancona, Italy
6. Division of Gastroenterology, Department of Medico-Surgical Sciences and Biotechnologies, Polo Pontino, Fondazione Eleonora Lorillard Spencer Cenci, Rome, Italy
7. Fondazione Eleonora Lorillard Spencer Cenci, Sapienza University of Rome, Italy
8. Dept Health Science, IUSM University of Rome, Italy
9. Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, University ‘Sapienza’, Rome, Italy