type: 1_or_7author: Papaioannou, Angelos_or_Kroupis, Christos_or_Spyropoulos, Vasileios_or_Σπυρόπουλος, Βασίλειος__elsubjectTerm: I. MATHEMATICS AND COMPUTER SCIENCE_or_IV. MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCEScollection: 1