Received: 4 January 2021
Accepted: 23 March 2021
First Online: 8 June 2021
: The study was approved by the Institutional Review Board (IRB) of the National Cancer Institute, Cairo University with ethical committee approval number 201617059.3, session 120 and approval date 26/12/2017. An informed written consent was taken from all subjects.
: All patients included in this research gave written informed consent to publish the data contained within this study.
: No financial or non-financial competing interests.