1. Ege University, Turkey
2. Izmir Atatürk Training and Research Hospital, Turkey
3. Izmir Çiğli Training and Research Hospital, Turkey
4. Uşak University Medical Faculty Hospital, Turkey
5. Ege University Medical Faculty Hospital, Turkey
6. Izmir Tepecik Training and Research Hospital, Turkey
7. Suat Seren Chest Diseases and Surgery Training and Research Hospital, Turkey