Fudan University
China
General Hospital of Piraeus “Tzaneio”
Greece
Zagazig University & Misr University (MUST)
Egypt
University of Saint Joseph
United States
National Hepatology & Tropical Medicine Research Institute (NHTMRI)
Egypt
University of Belgrade
Serbia
University of Minnesota
United States
Aristoteleion University of Thessaloniki
Greece
University of Padova
Italy
Federal University of Health Sciences of Porto Alegre
Brazil