Jan Kara1, Sarka Klimesova2, Norbert Pauk2. 1. Department of Pneumology and Thoracic Surgery, Third Faculty of Medicine, Charles University, University Hospital Na Bulovce, Praga, República Checa. Electronic address: jan.kara@seznam.cz. 2. Department of Pneumology and Thoracic Surgery, Third Faculty of Medicine, Charles University, University Hospital Na Bulovce, Praga, República Checa.