Kristoffersen, Kenneth Aase
van Amerongen, Aart
Böcker, Ulrike
Lindberg, Diana
Wubshet, Sileshi Gizachew
de Vogel-van den Bosch, Heleen
Horn, Svein Jarle
Afseth, Nils Kristian
Article History
Received: 28 September 2019
Accepted: 16 April 2020
First Online: 12 May 2020
Competing interests
: The authors declare no competing interests.