1. Department of Oral Medicine and Pathology and Hospital Dentistry, National and Kapodistrian University of Athens, 15772 Athens, Greece
2. Department of Neuroscience, Reproductive Sciences, and Dentistry, University of Naples “Federico II”, 80138 Naples, Italy
3. Department of Oral Diseases and Oral and Maxillofacial Surgery, University of Groningen, 9712 CP Groningen, The Netherlands