1. Gastroenterology and Hepatology
2. Pathology
3. Microbiology and Virology
4. Department of Infectious and Tropical Diseases, University of Insubria, Varese, Italy
5. Infectious Diseases
6. Abdominal Surgery, Istituto Mediterraneo per i Trapianti e Terapie ad Alta Specializzazione (ISMETT), University of Pittsburgh Medical Center, Palermo, Italy