1. Department of Cardiovascular Rehabilitation, Institute for Rehabilitation; Belgrade Serbia
2. Department of Physical Medicine and Rehabilitation, Institute of Rehabilitation; Belgrade Serbia
3. Department of Physical Medicine, Belgrade University School of Medicine; Belgrade Serbia
4. Department of Cardiology, Belgrade University School of Medicine; Belgrade Serbia
5. Clinic for Cardiology Clinical Centre of Serbia; Belgrade Serbia
6. Clinic for Cardiology, Hospital Medical Center Bežanijska Kosa; Belgrade Serbia
7. Clinic for Internal Disease Inter Medica; Niš Serbia