1. Section of Electronic Physics and Systems, Department of Physics, National and Kapodistrian University of Athens, 15784 Athens, Greece
2. Department of Electrical and Computer Engineering, Ajman University, Ajman P.O. Box 346, United Arab Emirates
3. Centre of Medical and Bio-allied Health Sciences Research (CMBHSR), Ajman University, Ajman P.O. Box 346, United Arab Emirates
4. Department of Social and Educational Policy, University of the Peloponnese, 20100 Korinthos, Greece