1. Laboratory for Clinical and Epidemiological Virology, Rega Institute for Medical Research, Department of Microbiology, Immunology and Transplantation, KU Leuven, Herestraat 49, 3000 Leuven, Belgium
2. Health Policy Research Centre, Institute of Health, Shiraz University of Medical Sciences, Shiraz 71348-14336, Iran
3. Blood Transfusion Research Centre, High Institute for Research and Education in Transfusion, Tehran 14665-1157, Iran