Text and Data Mining valid from 2018-01-17
Received: 2 August 2017
Accepted: 3 January 2018
First Online: 17 January 2018
Compliance with ethical standards
: Drs. Michael P. M. de Neree tot Babberich, Drs. Julia T. van Groningen, Prof Dr. Evelien Dekker, Prof. Dr. Theo Wiggers, Dr. Michel W. J. M. Wouters, Prof. Dr. Willem A. Bemelman, and Dr. Pieter J. Tanis have no conflict of interest or financial ties to disclose.