Funding for this research was provided by:
Astellas Pharma US
Text and Data Mining valid from 2019-09-05
Received: 28 February 2019
Revised: 13 August 2019
Accepted: 16 August 2019
First Online: 5 September 2019
Compliance with ethical standards
: The authors declare that they have no conflict of interest.
: The study was approved by the Ghent University Hospital review board (EC 2015/1438). The Declaration of Helsinki was followed and conducted in accordance with the legal regulations in Belgium.
: Informed consent was obtained from all individual participants and their parents included in the study.