1. Division of Medical Oncology, Tülay Aktaş Oncology Hospital, Ege University School of Medicine, İzmir, Turkey

2. Division of Medical Oncology, Medical Park Hospital, Ankara,Turkey

3. Division of Medical Oncology, Suat Seren Chest Hospital, İzmir, Turkey

4. Division of Internal Medicine, Ege University School of Medicine, İzmir, Turkey