1 1 Hamad Medical Corporation, Doha, Qatar. 2 National Liver Institute, Minoufiya University, Minoufiya, Egypt. 3 King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia. 4 Ain Shams University, Cairo, Egypt. 5 Cairo University, Cairo, Egypt. 6 Mansoura University, Mansoura, Egypt. 7 International Medical Center (IMC), Cairo, Egypt. 8 King Fahad Specialist Hospital, Dammam, Saudi Arabia. 9 Jordan Hospital, Amman, Jordan. 10 King Hussein Medical Center, Amman, Jordan. 11 American University of Beirut, Beirut, Lebanon. 12 Centre Pierre et Marie Curie, University of Algiers, Algiers, Algeria. 13 Mongi Slim University Hospital, Tunis, Tunisia. 14 Zheen International Hospital, Erbil, Iraq. 15 National Organ Transplant Program, Tripoli Central Hospital, Tripoli, Libya. 16 Theodor Bilharz Research Institute, Cairo, Egypt. 17 Address Correspondence to: Hatem Khalaf, M.Sc., Ph.D., F.E.B.S., Hamad Medical Corporation, P.O. Box 3050, Doha, Qatar.