1. Faculty of Medicine, Vilnius University , Vilnius LT-03101 , Lithuania
2. Department of Thoracic Surgery , Center of Cardio-Thoracic Surgery, Clinic of Chest Diseases, Immunology and Allergology, Institute of Clinical Medicine, Faculty of Medicine, , Vilnius LT-08661 , Lithuania
3. Vilnius University , Center of Cardio-Thoracic Surgery, Clinic of Chest Diseases, Immunology and Allergology, Institute of Clinical Medicine, Faculty of Medicine, , Vilnius LT-08661 , Lithuania
4. Department of Pathology and Forensic Medicine , Institute of Biomedical Sciences, Faculty of Medicine, , Vilnius LT-08406 , Lithuania
5. Vilnius University , Institute of Biomedical Sciences, Faculty of Medicine, , Vilnius LT-08406 , Lithuania