Elayadi, Moatasem
Magdy, Sarah
Khalil, Ehab
Zekri, Wael
Article History
Received: 12 October 2019
Accepted: 30 March 2020
First Online: 15 April 2020
Ethics approval and consent to participate
: Institutional Review board (IRB) at the National Cancer Institute, Cairo University has approved the waiver of patient consent form because of the retrospective nature of the study which used archived data and did not affect patients’ well-being in any way. The reference number is not applicable.
: Not applicable
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.