Text and Data Mining valid from 2019-10-28
Received: 20 September 2018
Accepted: 3 October 2019
First Online: 28 October 2019
Ethics approval and consent to participate
: This study was reviewed and approved by the Ethics Committee of the Ibn Sina Hospital (Rabat, Morocco). The Batna Anti Cancer center (Batna, Algeria) institutional review board waived the ethical approval for this study.
: The consent to participate is not applicable since this is a retrospective series containing no individual data.
: The authors declare that they have no competing interests.