Funding for this research was provided by:
Deutsche Kinderkrebsstiftung (2006.03, 2009.19, 2011.01 and 2014.17)
Text and Data Mining valid from 2019-11-14
Received: 20 August 2019
Accepted: 29 September 2019
First Online: 14 November 2019
Ethics approval and consent to participate
: The HIT2000 trial was approved by the central ethics committee in Würzburg, Germany. Written informed consent was obtained from the legal representatives of all participants before inclusion.
: The authors declare that they have no competing interests.