1. Clinic for Thoracic Surgery University Clinical Centre of Serbia Belgrade Serbia
2. Department for Pediatric Surgery University Children's Hospital Belgrade Serbia
3. Faculty of Special Education and Rehabilitation University of Belgrade Belgrade Serbia
4. Department of Thoracic Surgery Marmara University School of Medicine Istanbul Turkey
5. Clinic for Thoracic Surgery, Center for Thoracic Diseases, University Medical Center Mainz Johannes Gutenberg University Mainz Germany