Funding for this research was provided by:
Fonds voor Wetenschappelijk Reuma Onderzoek (FWRO), Brussels (3M140121)
Text and Data Mining valid from 2018-07-27
Received: 5 February 2018
Accepted: 14 May 2018
First Online: 27 July 2018
Ethics approval and consent to participate
: Prior to participation, all subjects provided written informed consent according to the Declaration of Helsinki. The study protocol was approved by the Medical Ethics Committee of the University Hospitals Leuven (ML 5236).
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.