Grogan, Kenneth http://orcid.org/0000-0003-1257-6245
Pflugmacher, Dirk http://orcid.org/0000-0002-2226-4029
Hostert, Patrick http://orcid.org/0000-0002-5730-5484
Mertz, Ole http://orcid.org/0000-0002-3876-6779
Fensholt, Rasmus http://orcid.org/0000-0003-3067-4527
Article History
Received: 30 May 2018
Accepted: 9 November 2018
First Online: 31 December 2018
Competing interests
: The authors declare no competing interests.