Text and Data Mining valid from 2019-08-01
Received: 19 March 2019
Revised: 19 April 2019
Accepted: 20 April 2019
First Online: 15 August 2019
: <b>Conflict of interest.</b> The authors declare no conflict of interest.
: <b>Ethical approval.</b> The study was carried out with permission from the Institution Review Board (IRB) of National Cancer Institute, Cairo University (#IRB00004025) in accordance with applicable institutional and international regulations and guidelines and confirmed to the provisions of the Declaration of Helsinki.
: <b>Patient consent for publication.</b> All patients were informed of the investigational nature of this study and provided their written informed consent.
: <b>Availability of data and materials.</b> The datasets generated and/or analyzed in this study are available from ExternalRef removed.