1. Laboratory of Virology; Medical School; University of Crete; Heraklion, Crete, Greece
2. Zoology Department; College of Science; King Saud University; Riyadh, Saudi Arabia
3. Department of Infection and Immunity; Research Center King Faisal Specialist Hospital and Research Center; Riyadh, Saudi Arabia
4. Department of Biochemistry; Medical School; University of Crete; Heraklion, Crete, Greece