collection: 2subjectTerm: II. NATURAL SCIENCES AND AGRICULTURAL SCIENCES_or_IV. MEDICINE AND HEALTH SCIENCES, LIFE SCIENCES, BIOLOGICAL SCIENCES_or_I. MATHEMATICS AND COMPUTER SCIENCEauthor: Bratsos, Athanasios_or_Spyropoulos, Vasileios_or_Pagourtzis, Aristeidis_or_Παγουρτζής, Αριστείδης__el