Jonsson, Micael http://orcid.org/0000-0002-1618-2617
Bengtsson, Jan
Gamfeldt, Lars
Moen, Jon
Snäll, Tord
Article History
Received: 18 June 2018
Accepted: 12 December 2018
First Online: 21 January 2019
Competing interests
: The authors declare no competing interests.