Research Associates Maria – Eleni Agoraki, MSc , PhD Antonis Alevizos, MA, PhD Cand. Magdalini Eleftheroglou, MA, PhD Cand. Varvara Veli, MSc , PhD Cand. Theofanis Giotis, MSc , PhD Cand. Stamatis Passas, MSc , PhD Cand. Panagiotis Spanos, MSc , PhD Cand.