Funding for this research was provided by:
University of Gothenburg
Received: 5 November 2020
Accepted: 28 December 2020
First Online: 16 February 2021
Ethics approval and consent to participate
: All participants were informed on the study procedures and goals and the study obtained written informed consent from all the participants. We confirm that all methods were performed in accordance with relevant guidelines and regulations. This study was approved by the Ethics Committee at the University of Gothenburg, Sweden (DNR: 036-12).
: No pictures or information that could lead into the identification of the participants were included in this publication. All participants were informed on the scope with the study and the intention to publish the results while keeping personal information confident to the study team and all participants gave written consent to do so.
: We declare that the authors have no competing interests as defined by Journal of BMC Cardiovascular Disorders, or other interests that might be perceived to influence the results and/or discussion reported in this paper.