1. Blood Transfusion Research Center; High Institute for Research and Education in Transfusion Medicine
2. Hepatitis Clinic; Tehran Blood Transfusion Center
3. Middle East Liver Disease (MELD) Center
4. Iran Hepatitis Network
5. Faculty of Paramedical Sciences; Shahid Beheshti University of Medical Sciences
6. Department of Biostatistics, School of Medical Sciences; Tarbiat Modares University; Tehran Iran