1. Department of Virology, Medical School, University of Crete, Heraklion, Crete, Greece.
2. Department of Applied Biochemistry and Immunology, Institute of Molecular Biology and Biotechnology, FORTH, Heraklion, Crete, Greece.
3. Department of Veterinary Medicine, University of Thessaly, Karditsa, Thessaly, Greece.
4. Department of Immunology, Allergy and Infectious Diseases, St. George Hospital, University of New South Wales, Sydney, NSW 2217, Australia.
5. Department of Dermatology, University of Athens, A. Syngros Hospital, Athens, Greece.