Received: 26 October 2020
Accepted: 17 January 2021
First Online: 12 February 2021
Ethics approval and consent to participate
: Medical ethical approval to conduct the SWAP study was granted by the Medical Ethics Committee of the Maastricht University Medical Centre (Reference: NL23703.068.08). As required by this committee, written informed consent was obtained from all participants prior to data collection. Medical ethics approval to use the coded EPR data was granted by the same committee (Reference 11-4-108). As approved by the committee, all attendees of our clinic gave permission by opt-out consent. A medical professional in the clinic assigned codes to the swingers and linked them to the datasets before anonymising them. We performed the data analysis in a fully anonymised and de-identified manner.
: Not applicable.
: Dr. Nicole HTM Dukers-Muijrers is a member of the editorial board of BMC Infectious Diseases. She declares to have no further competing interests. All other authors declare that they have no competing interests.