de Vries, W. M.
Briaire-de Bruijn, I. H.
van Benthem, P. P. G.
van der Mey, A. G. L.
Hogendoorn, P. C. W.
Funding for this research was provided by:
Leiden University Medical Center
Article History
Received: 13 August 2018
Revised: 7 November 2018
Accepted: 3 December 2018
First Online: 22 December 2018
Compliance with ethical standards
: To ensure patients’ privacy, all samples were managed in a coded fashion and all procedures were conducted according to the Code for Proper Secondary Use of Human Tissue in the Netherlands (Dutch Federation of Medical Scientific Societies).
: The authors declare that they have no conflict of interest.