Text and Data Mining valid from 2020-02-12
Received: 4 September 2019
Accepted: 21 January 2020
First Online: 12 February 2020
Ethics approval and consent to participate
: The regional Medical Ethical Committee (Zwolle) gave approval at 14th of October 2016 and assigned No. 16.06100. All patients gave their informed consent.
: Not applicable
: The authors declare that they have no competing interests.