1. Department of Internal Medicine and Cardiology Coltea Clinical Hospital Bucharest Romania
2. Department of Cardiology Emergency Cardiovascular Disease Institute ‘Prof. Dr. C.C. Iliescu’ Bucharest Romania
3. Department of Cardiology Yerevan State Medical University (YSMU), University Clinical Hospital Yerevan Armenia
4. Department of Cardiology Heraklion University Hospital Crete Greece