1. Yassin Abdel Ghaffar Charity Centre for Liver Disease and Research Cairo Egypt
2. Department of Paediatrics, Faculty of Medicine Ain Shams University Cairo Egypt
3. Sanford Burnham Prebys Medical Discovery Institute. Human Genetics Program La Jolla California USA
4. Department of Medical genetics, Faculty of Medicine Ain Shams University Cairo Egypt
5. Department of Paediatrics National Hepatology & Tropical Medicine Research Institute Cairo Egypt
6. Pathology Department Cairo University Cairo Egypt