Article History
Received: 25 August 2020
Accepted: 13 January 2021
First Online: 5 February 2021
Ethics approval and consent to participate
: Not applicable. No ethical approval will be needed because data from previous published studies in which informed consent was obtained by primary investigators will be retrieved and analyzed.
: Not applicable. Written informed consent for publication was not necessary because no patient data has been included in the manuscript.
: All authors hereby declare that they have no competing interest and other potentially conflicting interests, including specific financial interests and relationships and affiliations relevant to the Egyptian Heart Journal.