1. Department of Pulmonology, Semmelweis University, 1083 Budapest, Hungary
2. Department of Public Health, Faculty of Medicine, Semmelweis University, 1083 Budapest, Hungary
3. Department of Anesthesiology and Intensive Care, National Institute of Oncology, 1122 Budapest, Hungary
4. Department of Thoracic Surgery, National Institute of Oncology, 1122 Budapest, Hungary
5. Department of Pulmonary Rehabilitation, National Koranyi Institute of Pulmonology, 1122 Budapest, Hungary