1. Hemofarm AD, Research and Development Department, Belgrade
2. Institute for Pulmonary Diseases of Vojvodina, Clinic for Urgent Pulmonology, Intensive Care Unit, Sremska Kamenica
3. Institute for Pulmonary Diseases of Vojvodina, Clinic for Urgent Pulmonology, Intensive Care Unit, Sremska Kamenica + Faculty of Medicine, Novi Sad
4. Institute for Pulmonary Diseases of Vojvodina, Center for Pathophysiology of Breathing and Sleep Medicine, Sremska Kamenica
5. Institute for Pulmonary Diseases of Vojvodina, Center for Microbiology, Virology and Immunology, Sremska Kamenica
6. Faculty of Medicine, Institute for Medical Statistics and Informatics, Belgrade
7. Faculty of Medical Sciences, Kragujevac