1. Department of Medical Oncology, University of Antwerp, 2650 Antwerp, Belgium
2. Department of Medical Oncology, Royal Marsden Hospital NHS Foundation Trust, London SW3 6JJ, UK
3. Department of Surgical and Oncology Sciences, University of Palermo, 90127 Palermo, Italy
4. Department of Radiation Oncology, B.O.C. Oncology Centre, 2006 Nicosia, Cyprus
5. Department of Medical Oncology, B.O.C. Oncology Centre, 2006 Nicosia, Cyprus