Vassiliki Kotoula1, Florentia Fostira2, Elena Fountzilas3. 1. Department of Pathology, School of Medicine, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece. 2. Molecular Diagnostics Laboratory, InRASTES, NCSR Demokritos, Athens, Greece. 3. Euromedica General Clinic, Thessaloniki, Greece.