[1] Clinic for Pulmonology,Faculty of Medicine, University of Belgrade
[2] University Clinical Center of Serbia,Clinic for Pulmonology
[3] University Clinical Center of Serbia,Department of Thoracic Surgery
[4] Medical University of Vienna,Faculty of Pharmacy, Department for Medical Biochemistry
[5] University of Belgrade,Division of Pulmonology, Department of Internal Medicine II
[6] Medical University of Vienna,Faculty of Medicine, Institute for Medical Statistics and Informatics
[7] University of Belgrade,undefined