Finstad, Anders G.
Andersen, Tom
Larsen, Søren
Tominaga, Koji
Blumentrath, Stefan
de Wit, Heleen A.
Tømmervik, Hans
Hessen, Dag Olav
Article History
Received: 10 February 2016
Accepted: 27 July 2016
First Online: 24 August 2016
Competing interests
: The authors declare no competing financial interests.