1. Medical School, University of Crete, Vassilika, 71110 Heraklion, Greece
2. Radiotherapy Department, Theagenio Anticancer Hospital of Thessaloniki, 54639 Thessaloniki, Greece
3. Cardiology Department, University General Hospital of Heraklion, Heraklion, 71110 Heraklion, Greece
4. Department of Medical Physics, Faculty of Medicine, University of Cret, Iraklion, P.O. Box 2208, 71003 Heraklion, Greece
5. Oncology Clinic, Metaxa Cancer Hospital, Mpotasi 51, 18537 Piraeus, Greece
6. Department of Medical Oncology, University General Hospital of Heraklion, 71500 Heraklion, Greece
7. Department of Radiotherapy, University Hospital/Medical School, University of Crete, Vassilika, 71110 Heraklion, Greece