Received: 24 April 2019
Accepted: 28 August 2019
First Online: 5 September 2019
Ethics approval and consent to participate
: This study does not involve any patients or subjecting volunteers to any conditions other than a standard training situation and does not fall under the Medical Research Involving Human Subjects Act (WMO), such that formal approval of the Institutional Review Board was not required by Dutch law. All volunteer participants gave a written informed consent to participate in this study.
: Not applicable.
: The authors declare that they have no competing interests.