1. Liver Unit, Department of Medicine, University of Rome Tor Vergata, Rome, Italy
2. Hepatology and Gastroenterology, Medicine, Indiana University, Indianapolis, IN, USA
3. Division of Transplant Surgery, Department of Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
4. Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA
5. Department of Internal Medicine and Medical Specialties, Sapienza University of Rome, Rome, Italy
6. Eleonora Lorillard Spencer Cenci Foundation, Rome, Italy
7. Department of Anatomical, Histological, Forensic Medicine and Orthopedics Sciences, Sapienza University of Rome, Rome, Italy
8. Department of Nutrition, Texas A&M University, College Station, TX, USA
9. Department of Medical Physiology, Texas A&M University, Bryan, TX, USA