1. Department of Radiotherapy, University Hospital/Medical School, University of Crete, Vassilika, 71110 Crete, Greece
2. Radiotherapy Department, Theageneio Cancer Hospital, 54639 Thessaloniki, Greece
3. Edinburgh Cancer Research UK Centre, Institute of Genetics & Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XR, UK
4. Department of Dermatology, NHS Lothian Hospital, EH3 9EN Edinburgh, UK
5. 2nd Propaedeutic Department of Medicine, Attikon University Hospital, 12462 Athens, Greece
6. Department of Medical Oncology, University Hospital of Ioannina, 45500 Ioannina, Greece
7. Department of Clinical Oncology, Beatson West of Scotland Cancer Centre, Glasgow G12 0YN, UK