1. Department of Medical Oncology, Ankara University School of Medicine, Ankara, Turkey
2. Ankara University Cancer Institute, Ankara, Turkey
3. Department of Medical Oncology, Izmir University of Economics, Medical Point Hospital, Izmir, Turkey
4. Department of Medical Oncology, Istanbul University School of Medicine, Istanbul, Turkey
5. Department of Medical Oncology, Trakya University School of Medicine, Edirne, Turkey
6. Department of Medical Oncology, Cerrahpasa School of Medicine, Istanbul, Turkey
7. Department of Medical Oncology, University of Health Science, Bakirkoy Dr Sadi Konuk Training and Research Hospital, Istanbul, Turkey