1. Thoracic Surgery Department, İzmir Katip Çelebi University, İzmir, Turkey
2. Thoracic Surgery Department, İzmir Atatürk Education and Research Hospital, İzmir, Turkey
3. Public Health Department, Trakya University, Edirne, Turkey
4. Thoracic Surgery Department, Manisa Celal Bayar University, Manisa, Turkey