Selven, Hallgeir
Busund, Lill-Tove Rasmussen
Andersen, Sigve
Bremnes, Roy M.
Kilvær, Thomas Karsten
Article History
Received: 11 January 2021
Accepted: 5 April 2021
First Online: 5 May 2021
Competing interests
: The authors declare no competing interests.