Samartin, Stéphanie
Heiri, Oliver http://orcid.org/0000-0002-3957-5835
Joos, Fortunat http://orcid.org/0000-0002-9483-6030
Renssen, Hans
Franke, Jörg
Brönnimann, Stefan
Tinner, Willy
Article History
Received: 31 August 2016
Accepted: 6 January 2017
First Online: 6 February 2017
Competing interests
: The authors declare no competing financial interests.