1. Department of Pathology, Shiraz University of Medical Sciences, PO Box 71345-1864, Shiraz, Iran
2. Transplant Research Center, Shiraz University of Medical Sciences, PO Box 71345-1864, Shiraz, Iran
3. Department of Surgery, Shiraz University of Medical Sciences, PO Box 71345-1864, Shiraz, Iran
4. Microbiology Research Center, Shiraz University of Medical Sciences, PO Box 71345-1864, Shiraz, Iran