Received: 28 May 2020
Accepted: 21 June 2021
First Online: 5 July 2021
: We gained approval from ethics committee of Mazandaran University of Medical Science (ethical code: REC.1398.5197)<b>.</b> Informed consent is not applicable for this secondary analysis. Administrative permission was given to access datasets of medical records by IHIO in response to Mazandaran University of Medical Science request.
: Not applicable.
: The authors declared that they have no competing interest.