1. Department of Infection and Immunity, Research Center, King Faisal Specialist Hospital and Research Center, Saudi Arabia
2. Department of Microbiology and Immunology, School of Medicine, Alfaisal University, Riyadh, Saudi Arabia
3. Laboratory of Clinical Chemistry, Medical School, University of Crete, Heraklion, Greece
4. Laboratory of Virology, Medical School, University of Crete, Heraklion, Greece
5. Zoology Department, College of Science, King Saud University, Riyadh, Saudi Arabia