Hald, Øyvind H.
Olsen, Lotte
Gallo-Oller, Gabriel
Elfman, Lotta Helena Maria
Løkke, Cecilie
Kogner, Per
Sveinbjörnsson, Baldur
Flægstad, Trond
Johnsen, John Inge http://orcid.org/0000-0003-1277-812X
Einvik, Christer
Article History
Received: 26 April 2018
Revised: 27 September 2018
Accepted: 23 November 2018
First Online: 12 December 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.