1. Department of Gastroenterology, Hepatology and Endemic Medicine; Theodore Bilharz Research Institute; Cairo Egypt
2. Department of Gastroenterology, Hepatology and Endemic Medicine; Minia University Hospitals; Minia Egypt
3. Rheumatology Department; Cairo University Hospitals; Cairo Egypt
4. Department of Gastroenterology, Hepatology and Endemic Medicine; Ain Shams University Hospitals; Cairo Egypt
5. Department of Gastroenterology, Hepatology and Endemic Medicine; Egyptian Military Academy; Cairo Egypt
6. Department of Gastroenterology, Hepatology and Endemic Medicine, Faculty of Medicine; Beni-suef University; Beni-suef Egypt