Funding for this research was provided by:
Stichting Zeldzame Ziekten Fonds (NA)
Received: 15 March 2019
Accepted: 25 July 2019
First Online: 7 August 2019
Change Date: 17 September 2019
Change Type: Correction
Change Details: Following publication of the original article , the authors reported that the headers in Table 2 in their paper were omitted.
Ethics approval and consent to participate
: This study was approved of by our local medical ethics review board: `CMO regio Arnhem Nijmegen´. Registration number: 2013/177. Written informed consent was collected from all participants.
: Written consent for publication for the pictures in figure one was obtained.
: The authors declare that they have no competing interests.