Funding for this research was provided by:
Stichting Kinderen Kankervrij (270)
Text and Data Mining valid from 2019-02-12
Received: 2 October 2018
Accepted: 28 January 2019
First Online: 12 February 2019
Compliance with ethical standards
: This work has been supported by the KIKA foundation (Children Cancer-free), but this foundation had no role in study design or interpretation of the data.