1. Laboratory of Molecular Oncology; Hellenic Foundation for Cancer Research/Aristotle University of Thessaloniki; Thessaloniki Greece
2. Faculty of Medicine, School of Health Sciences; Aristotle University of Thessaloniki; Thessaloniki Greece
3. Division of Oncology, Second Department of Internal Medicine; Attikon University Hospital; Athens Greece
4. Victor Chang Cardiac Research Institute; Darlinghurst NSW Australia
5. The University of New South Wales; Kensington NSW Australia
6. Section of Biostatistics, Hellenic Cooperative Oncology Group; Data Office; Athens Greece
7. Department of Pathology; Evangelismos Hospital; Athens Greece
8. Radiotherapy Department; Ion Chiricuta Cancer Institute; Cluj Romania
9. Institute of Oncology Ion Chiricuta and UMF Iuliu Hatieganu; Cluj-Napoca Romania
10. Department of Pathology; Ion Chiricuta Cancer Institute; Cluj Romania
11. Department of Pathology; School of Health Sciences, Faculty of Medicine, Aristotle University of Thessaloniki; Thessaloniki Greece
12. First Department of Otorhinolaryngology; AHEPA Hospital, School of Health Sciences, Faculty of Medicine, Aristotle University of Thessaloniki; Thessaloniki Greece
13. Department of Otolaryngology Head and Neck Surgery; Hippokration Hospital, National and Kapodistrian University of Athens; Athens Greece
14. Division of Oncology, Department of Medicine; University Hospital, University of Patras Medical School; Patras Greece
15. Department of Radiology; AHEPA Hospital, School of Health Sciences, Faculty of Medicine, Aristotle University of Thessaloniki; Thessaloniki Greece
16. Oncology Section, Second Department of Internal Medicine; Hippokration Hospital; Athens
17. Department of Hygiene, Epidemiology and Medical Statistics; National and Kapodistrian University of Athens, Medical School; Athens Greece