Text and Data Mining valid from 2020-02-12
Received: 29 October 2019
Accepted: 11 December 2019
First Online: 12 February 2020
Ethics approval and consent to participate
: This clinical study was conducted in accordance with the World Medical Association Declaration of Helsinki (version VI, 2002). The Medical Ethical Committee of the University Medical Center Groningen considered this case series study not subject to the Medical Research Involving Human Subjects Act (Number M15.184100). The study was registered at the Netherlands Trial Register (Number NL8117). After receiving approval, the subjects were examined, and all participants provided written informed consent.
: Written consent to publish was obtained from all participants.
: The authors H.J.A. Meijer and G.M. Raghoebar declare that they have no competing interests.