1. University of Novi Sad, Faculty of Medicine, Department of Nursing, Novi Sad, Serbia
2. University of Novi Sad, Faculty of Medicine, Department of Nursing, Novi Sad, Serbia + Oncology Institute of Vojvodina, Sremska Kamenica, Serbia
3. University of Novi Sad, Faculty of Medicine, Department of Nursing, Novi Sad, Serbia + Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, Serbia
4. Institute for Pulmonary Diseases of Vojvodina, Sremska Kamenica, Serbia
5. University of Novi Sad, Faculty of Medicine, Novi Sad, Serbia