1. Clinical center of Serbia, Clinic for cardiology, Belgrade + Medical school, Belgrade
2. Clinical center of Serbia, Clinic for cardiology, Belgrade
3. Poznan University of Medical Sciences, Department of Cardiology, Poznan, Poland
4. State Clinical Hospital, Krasnoyarsk Medical University by the name of prof. V.F. Voino-Yasenetck, Invasive Cardiology Department, Krasnoyarsk, Russia
5. Serbian Academy of Sciences and Arts, Belgrade