Funding for this research was provided by:
Hjärt-Lungfonden (20120209, 20150423, 20170669)
Stockholms Läns Landsting (ALFGBG-824851)
Received: 2 November 2020
Accepted: 31 January 2021
First Online: 14 February 2021
Ethics approval and consent to participate
: Informed, written consent was obtained from all study participants, and the study was approved by the Regional Ethics Review Board in Stockholm.
: Not applicable.
: The authors declare that they have no conflict of interest.