Funding for this research was provided by:
Received: 22 June 2020
Accepted: 18 November 2020
First Online: 30 November 2020
Ethics approval and consent to participate
: The methods, procedures, design and informed consent protocol for the present study were reviewed and authorized by the Regional Research Ethical Review Board of Umeå, Sweden, Department of Medical Research (no. 07-031 M with extensions). The study was in accordance with the World Medical Association’s Declaration of Helsinki. All participants were given verbal- and written information about the trial and provided written informed consent to participate. All participants were made aware of their possibility to voluntarily terminate their participation at any time.
: Not applicable.
: All authors declare that they have no conflict of interest.