Funding for this research was provided by:
Agentschap voor Innovatie door Wetenschap en Technologie (IWT-140027 SBO)
Text and Data Mining valid from 2019-12-01
Received: 26 September 2019
Accepted: 27 November 2019
First Online: 10 December 2019
Ethics approval and consent to participate
: This study was conducted according to the ethical guidelines laid down in the Declaration of Helsinki. This study was reviewed and approved by the medical ethics committee of the Vrije Universiteit Brussel, Brussels, Belgium (reference number: B.U.N. 143,201,630,458). Written consent was obtained from all participants.
: Not applicable. Personal data were not identifiable during the analysis.
: The authors declare that they have no competing interests.