1. Chemistry Department, Faculty of Science, Helwan University, Cairo
2. Chemistry Department, Faculty of Science, Damietta University, Damietta
3. Biochemistry Department, National Hepatology Tropical Medicine Research Institute, Cairo
4. Internal Medicine Department, Damnohour Teaching Hospital, Damnohour
5. Medical Biochemistry and Molecular Biology, Faculty of Medicine, Menoufia University, Shebin ElKom
6. Internal Medicine Department, Faculty of Medicine, Cairo University, Cairo
7. Endemic Medicine Department, Faculty of Medicine, Helwan University, Cairo
8. Clinical Pathology Department, Faculty of Medicine, Al-Azhar University, Damietta, Egypt
9. Departamento de Gastroenterología, Escuela de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
10. Division of Gastroenterology, Department of Medicine, Schulich School of Medicine, Western University & London Health Sciences Centre, London, Ontario, Canada
11. Key Laboratory of Diagnosis and Treatment for the Development of Chronic Liver Disease in Zhejiang Province, Wenzhou, China