Text and Data Mining valid from 2020-01-02
Received: 11 December 2019
Accepted: 23 December 2019
First Online: 2 January 2020
Ethics approval and consent to participate
: The study was approved by the local institutional review board (IRB), at King Abdulaziz University/and the patients’ consent was waived for this retrospective observational study.
: Not applicable
: The author declares that he has no competing interests.