1. Department of Physical Medicine and Rehabilitation, General Hospital “Dr Radivoj Simonovic” Sombor, Sombor, Serbia
2. Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
3. Institute of Child and Youth Health Care of Vojvodina, Novi Sad, Serbia
4. Special Hospital for Rheumatic Diseases, Novi Sad, Serbia
5. Institute for Pulmonary Diseases of Vojvodina, Vojvodina, Serbia