Authors
Dilyana M. Yakova-Hristova
Cardiology Division, Medical University – Pleven, Bulgaria
Martin I. Hristov
Cardiology Division, Medical University – Pleven, Bulgaria
Tihomir R. Rashev
Division of Molecular Biology, University Scientific Research Laboratory, Medical University – Pleven, Bulgaria
Yoana M. Todorova
Pencho T. Tonchev
Department of Surgical Propaedeutics, Medical University – Pleven, Bulgaria
Nadya Y. Stancheva-Hristova
Cardiology Division, Medical University – Pleven, Bulgaria
Snezhanka T. Tisheva-Gospodinova
Cardiology Division, Medical University – Pleven, Bulgaria