1. Department of Thoracic Surgery, Sirnak State Hospital , Sirnak, Turkey
2. Department of Thoracic Surgery, Marmara University School of Medicine , Istanbul, Turkey
3. Department of Thoracic Surgery, Uskudar University School of Medicine , Istanbul, Turkey
4. Department of Thoracic Surgery, Beykoz State Hospital , Istanbul, Turkey
5. Department of Thoracic Surgery, Biruni University School of Medicine , Istanbul, Turkey