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Bulgarian Cardiology 26(2): 21-26
doi:
10.3897/bgcardio.26.e52960
Received:
06 Apr 2020 | Approved:
15 May 2020 | Published:
06 Jul 2020
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Authors

Iskren Garvanski
- Corresponding author
Acibadem City Clinic Cardiovascular Center, Sofia, Bulgaria

Acibadem City Clinic Cardiovascular Center, Sofia, Bulgaria
Acibadem City Clinic Cardiovascular Center, Sofia, Bulgaria
Academic editor
UMHAT Alexandrovska, Sofia, Bulgaria
Conflict of interest
The authors have declared that no competing interests exist.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.