Achttien, Retze http://orcid.org/0000-0001-9379-9402
van Lieshout, Jan
Wensing, Michel
van der Sanden, Maria Nijhuis
Staal, J. Bart
Article History
Received: 27 April 2018
Accepted: 24 March 2019
First Online: 25 April 2019
Ethics approval and consent to participate
: Data from a previously conducted Randomized clinical trial (RCT) were used. The Medical Ethics committee Arnhem-Nijmegen, the Netherlands, waived approval (number 2013/229) for this RCT. All subjects gave written informed consent. The declaration of Helsinki was followed.
: Not applicable.
: The authors declare that they have no competing interest.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.