author: Kontogiannis, Ioannis_or_Spyropoulos, Vasileios_or_Perivolaropoulos, Leandros_or_Toumpis, Stavros_or_Michalopoulos, Charilaos_or_Gitzenis, Savvas_or_Cheliotis, Dimitrios_or_Παγουρτζής, Αριστείδης__ellang: elsubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_IV. MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES