1. Department of Clinical Therapeutics, National and Kapodistrian University of Athens, Alexandra Hospital , Athens , Greece
2. Department of Medical Oncology, Aristotle University of Thessaloniki, Papageorgiou General Hospital , Thessaloniki , Greece
3. Department of Oncology, 401 General Military Hospital , Athens , Greece
4. Department of Oncology, Bioclinic , Thessaloniki , Greece