1. Vilnius University, Medical Faculty, Institute of Clinical Medicine, Clinic of Chest Diseases, Immunology and Allergology, Department of Pulmonology and Allergology , Vilnius , Lithuania
2. Vilnius University Hospital Santaros Klinikos, Department of Pulmonology and Allergology , Santariškių Str. 2 , Vilnius LT-08661 , Lithuania
3. Pathology Department, National Center of Pathology, Affiliate of Vilnius University Hospital Santaros Klinikos , Vilnius , Lithuania