Text and Data Mining valid from 2019-08-22
Received: 27 May 2019
Accepted: 5 August 2019
First Online: 22 August 2019
Compliance with Ethical Standards
: The authors declare that they have no competing interests.
: In accordance with the Dutch Act on Human Subjects Medical Research, the Medical Ethics Committee of St. Antonius Hospital Nieuwegein waived formal approval.