Brovold, Henrik
Lund, Trine
Svistounov, Dmitri
Solbu, Marit D.
Jenssen, Trond G.
Ytrehus, Kirsti
Zykova, Svetlana N.
Article History
Received: 11 March 2019
Accepted: 3 July 2019
First Online: 19 July 2019
Competing Interests
: The authors declare no competing interests.