Kok, D.
Peeters, C. M. M.
Wapstra, F. H.
Bulstra, S. K.
Veldhuizen, A. G.
Article History
Received: 8 July 2018
Accepted: 27 November 2018
First Online: 19 December 2018
Ethics approval and consent to participate
: The use of human vertebral bodies was granted by the ethics committee of University Medical Center Groningen.
: 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.