Rounge, Trine B. http://orcid.org/0000-0003-2677-2722
Umu, Sinan U. http://orcid.org/0000-0001-8081-7819
Keller, Andreas http://orcid.org/0000-0002-5361-0895
Meese, Eckart
Ursin, Giske
Tretli, Steinar
Lyle, Robert
Langseth, Hilde
Article History
Received: 29 March 2018
Accepted: 13 November 2018
First Online: 5 December 2018
Competing Interests
: The authors declare no competing interests.