Michielsen, Maartje
Van Haver, Annemieke
Bertrand, Veronique
Vanhees, Matthias
Verstreken, Frederik http://orcid.org/0000-0003-2849-1190
Article History
Received: 14 May 2018
Accepted: 29 May 2018
First Online: 20 June 2018
Compliance with ethical standards
:
: Dr. Verstreken has a patent with Materialise with royalties paid. The other authors have no conflicts of interest to report.