Text and Data Mining valid from 2020-02-10
Received: 21 July 2019
Accepted: 21 January 2020
First Online: 10 February 2020
Ethics approval and consent to participate
: Ethical approval was deemed exempt by the Medical Research Ethics Committee of the Erasmus University Medical Center (MEC-2014-671).
: Not applicable
: The authors’ declare that they have no competing interests.