Affiliation: | 1. Department of Medical Oncology, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey;2. Department of Internal Medicine, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey;3. Geriatric Center, Kayseri Education and Research Hospital, Kayseri, Turkey;4. Department of Medical Oncology, Izmir Tepecik Education and Research Hospital, Izmir, Turkey;5. Department of Medical Oncology, Trabzon Kanuni Education and Research Hospital, Trabzon, Turkey;6. Department of Biostatistics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey |