1. Department of Preventive Dentistry, Periodontology, Implant Biology, Faculty of Dentistry, School of Health Sciences, Aristotle University Thessaloniki, 54124 Thessaloniki, Greece
2. Laboratory of Agronomy, School of Agriculture, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
3. School of Dentistry, European University Cyprus, 2404 Nicosia, Cyprus