Taj, Tahir http://orcid.org/0000-0001-9320-9759
Poulsen, Aslak Harbo
Ketzel, Matthias
Geels, Camilla
Brandt, Jørgen
Christensen, Jesper Heile
Hvidtfeldt, Ulla Arthur
Sørensen, Mette
Raaschou-Nielsen, Ole
Funding for this research was provided by:
Nordforsk ((Project #75007: NordicWelfAir)
Article History
Received: 11 January 2021
Accepted: 6 May 2021
First Online: 29 May 2021
Declarations
:
: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
: The study was entirely register-based. Therefore, in accordance with Danish law, no ethical approval was needed.