Funding for this research was provided by:
Rosalind Franklin University of Medicine and Science
Prinses Beatrix Spierfonds
Jacques und Gloria Gossweiler-Stiftung
Phelps Stokes Fund
Stichting Vrienden Beatrix Kinderziekenhuis
Science Foundation Dystonia Society
Healthy Aging Fund UMCG
Text and Data Mining valid from 2019-10-14
Received: 25 May 2019
Accepted: 20 September 2019
First Online: 14 October 2019
Ethics approval and consent to participate
: The study was approved by the Medical Ethics Committee of the University Medical Center Groningen and participants or their parents gave written informed consent. All authors confirm that they have read the journal’s position on issues involved in ethical publication and affirm that this work is consistent with those guidelines.
: Not applicable.
: The authors declare that there are no disclosures or competing interests relevant to this work.