Received: 2 August 2019
Accepted: 23 September 2019
First Online: 28 November 2019
Ethics approval and consent to participate
: This study was approved by the ethics committee of institutional review board (IRB) for medical research ethics. Faculty of Medicine, Zagazig University. A detailed informed verbal consent has been taken from all participants as it was just observational study with no intervention, and they have to implant the pacemaker by any way with our follow-up that was of a great value for them, and this consent was approved by the ethics committee.
: Available in the same written consent
: The authors declare that they have no competing interests.