Received: 7 July 2020
Accepted: 13 August 2020
First Online: 24 August 2020
Ethics approval and consent to participate
: This study was approved by the Institutional Research Board of Mansoura Faculty of Medicine at Mansoura University in Egypt; reference number of approval, R.20.06.862. Informed consent was waived because this was a retrospective study.
: Not applicable.
: The authors declare that they have no competing interests.