Received: 24 November 2020
Accepted: 11 February 2021
First Online: 26 February 2021
Ethics approval and consent to participate
: All procedures performed on patient tumor samples in this study were in accordance with the ethical standards of the Institutional Ethics Committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Since this was a retrospective observational study and did not involve actual patients or patient’s images, ethical exemption was obtained from the Aga Khan University Ethical Review Committee (2020–3340-8831). Informed consent was obtained from parents and/or legal guardians for participants who are under age 18.
: Written informed consent was obtained from parents and/or legal guardians for participants who are under age 18.
: It is declared that all authors have no conflict of interest.