Received: 17 May 2019
Accepted: 4 December 2019
First Online: 19 December 2019
Ethics approval and consent to participate
: Patients were included after written consent was signed by the patients. The ethics committee of the institutional review board of our hospital approved this research. There are two institutes belong to the authors of the study. The first (chief institute) is the Department of Cardiovascular Medicine, Assiut University Heart Hospital, Assiut University, Egypt. The second institute is the Department of Cardiology, Kameda Medical Center, Chiba, Japan (affiliate center of Tokyo Medical and Dental University, Tokyo, Japan).Regarding the reference number, since Kameda Medical Center is an affiliate center for the Department of Cardiology, Tokyo Medical and Dental University, and not a university, the ethics committee (Head of Interventional Cardiology, Head of Department of Cardiology and others) has not provided a reference number but only approval.In Egypt, the ethics committee of the Faculty of Medicine, Assiut University, provided the following reference number: IRB 00008718. Registered by the Office for Human Research Protection.
: Not applicable.
: The authors declare that they have no competing interests.