1 Egyptian Liver Research Institute and Hospital (ELRIAH), Sherbin, El Mansûra, Egypt. g_shiha@hotmail.com.
2 Hepatology and Gastroenterology Unit, Internal Medicine Department, Faculty of Medicine, Mansoura University, El Mansûra, Egypt. g_shiha@hotmail.com.
3 Egyptian Liver Research Institute and Hospital (ELRIAH), Sherbin, El Mansûra, Egypt.
4 Biostatistics and Cancer Epidemiology Department, South Egypt Cancer Institute, Assiut University, Asyût, Egypt.
5 Tropical Medicine Department, Faculty of Medicine, Port Said University, Port Said, Egypt.