Text and Data Mining valid from 2019-11-27
Received: 17 August 2019
Accepted: 18 November 2019
First Online: 27 November 2019
Ethics approval and consent to participate
: The study was approved by the Rassoul Aazam University Hospital ethical committee.
: There was no signed informed consent since no personal data were collected.
: The authors declare that they have no competing interests.