1. Faculty of Medicine, Professor of Internal Medicine and Endocrinology, Menoufia University, Egypt
2. Internal medicine department, Resident of Internal Medicine, El Mahalla General Hospital, Gharbia, Egypt
3. clinical biochemistryand molecular diagnostics department, Lecturer of Clinical Biochemistry and Molecular Diagnostics -national Liver Institute - Menoufia University, Egypt
4. Faculty of Medicine, Lecturer of Internal Medicine and Endocrinology, Menoufia University, Egypt