1. Department of Medical Oncology, Cerrahpasa University Faculty of Medicine, Istanbul, Turkey
2. Department of Medical Oncology, Istanbul University Institute of Oncology, Istanbul, Turkey
3. Department of Medical Oncology, Tekirdağ Dr. Ismail Fehmi Cumalioğlu City Hospital, Tekirdağ, Turkey
4. Department of Medical Oncology, Basaksehir Çam and Sakura City Hospital, Istanbul, Turkey
5. Department of Medical Oncology, Hacettepe University Cancer Institute, Ankara, Turkey.