Funding for this research was provided by:
Universitair Ziekenhuis Gent
Received: 3 July 2017
Accepted: 25 May 2018
First Online: 5 June 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.