1. Second Department of Medical Oncology, Agios Savvas Cancer Hospital, 11522 Athens, Greece
2. Laboratory of Histology‑Embryology Molecular Carcinogenesis Group, National and Kapodistrian University of Athens, Greece
3. Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
4. Department of Oral and Maxillofacial Pathology and Medicine, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece