1. Division of Thoracic Surgery, Dr. Nafiz Korez Sincan State Hospital, Ankara, Turkey
2. Department of Thoracic Surgery, Ufuk University School of Medicine, Ankara, Turkey
3. Division of Orthopedics and Traumatology, Dr. Nafiz Korez Sincan State Hospital, Ankara, Turkey
4. Division of Thoracic Surgery, Arnavutkoy State Hospital, Istanbul, Turkey