Text and Data Mining valid from 2019-12-01
Received: 25 July 2019
Accepted: 26 November 2019
First Online: 4 December 2019
Ethics approval and consent to participate
: The study was approved by the institutional review board of the college of medicine at King Saud University in Riyadh, Saudi Arabia (Ref. No. 18/0324/IRB). A consent to participate form was waived for this study since it did not involve any patient interview.
: Patients were not required to give informed consent to the study because the analysis used anonymous clinical data.
: Not applicable.
: The authors declare that they have no competing interests.