Funding for this research was provided by:
Text and Data Mining valid from 2020-02-11
Received: 19 September 2019
Accepted: 27 January 2020
First Online: 11 February 2020
Ethics approval and consent to participate
: The study was approved by the Regional Ethical Review Board of Gothenburg (Dnr 604-12). Tumour samples were obtained after signed informed consent from the parents or legal guardians of children who underwent surgery at the Sahlgrenska University Hospital.
: Consent is granted through the ethical permission.
: The authors declare that they have no competing interests.