1 Digestive Diseases and Liver Transplantation Center, Fundeni Clinical Institute, Bucharest, Romania. mirela_onica@yahoo.com.
2 Digestive Diseases and Liver Transplantation Center, Fundeni Clinical Institute, Bucharest; Carol Davila University of Medicine and Pharmacy, Bucharest, Romania.
3 Carol Davila University of Medicine and Pharmacy, Bucharest; Department of Pathology, Fundeni Clinical Institute, Bucharest, Romania.