type: 7author: Kontogiannis, Ioannis_or_Gitzenis, Savvas_or_Spyropoulos, Vasileios_or_Toumpis, StavrossubjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_IV. MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES_or_III. ENGINEERING AND TECHNOLOGY_or_I. MATHEMATICS AND COMPUTER SCIENCE