1. Clinic of Hospital Dentistry Densstal School National & Kapodistrian University of Athens Athens Greece
2. Clinic of Oral Diagnosis & Radiology Dental School National & Kapodistrian University of Athens Athens Greece
3. Clinic of Oral and Maxillofacial Surgery Dental School National & Kapodistrian University of Athens Athens Greece
4. Oncology Department Saint Savvas Hospital Athens Greece
5. Third Medical Oncology Department Hygeia Hospital Athens Greece
6. Oncology Department Mitera Hospital‐Hygeia Athens Greece
7. Medical Oncology Department Hippokration Hospital Athens Greece
8. Attikon Hospital National and Kapodistrian University of Athens Athens Greece
9. Department of Biological Chemistry and First Department of Internal Medicine Laikon Hospital, Medical School National and Kapodistrian University of Athens Athens Greece
10. Oncology Unit Metropolitan Hospital Athens Greece
11. First Medical Oncology Department Euroclinic of Athens Athens Greece
12. Department of Medical Oncology Athens Medical Center Athens Greece
13. Department of Hematology Athens Medical Center Psychikon Branch Athens Greece
14. 2nd Oncology Department General and Oncologic Hospital “Agii Anargyri” Athens Greece
15. Hematology Department Laikon General Hospital Athens Greece
16. Department of Oncology Unit Elena Venizelou Maternity Hospital Athens Greece
17. First Oncology Department Metropolitan Hospital Athens Greece
18. 2nd Oncology Clinic IASO Maternity Hospital and 3rd Oncology Clinic Metropolitan General Hospital Athens Greece
19. Department of Diagnostic Sciences and Oral Medicine University of Florida Health Science Center College of Dentistry Gainesville FL USA
20. Supportive Care Unit Department of Medical Oncology and Haematology Fondazione IRRCS Istituto Nazionale dei Tumori Milano Italy