Received: 23 December 2019
Accepted: 3 February 2020
First Online: 18 February 2020
Ethics approval and consent to participate
: The study was approved by the local institutional review board (IRB), at King Abdulaziz University, with reference number (713/19), and the patients’ consent was waived for this retrospective observational study.
: Not applicable
: The authors declare that they have no competing interests.