Received: 21 June 2018
Accepted: 5 March 2019
First Online: 18 March 2019
Ethics approval and consent to participate
: This study is exempt from approval by the Regional Scientific Ethics Committee for Southern Denmark as the study does not fall within the scope of the Medical Research Involving Human Subject Act (§14). Participants were carefully informed about the study, were assured anonymity and confidentiality and signed an informed written consent form. All participant information and collected data was handled according to the approval by The Danish Data Protection Agency.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.