Muller, Adrian
Schader, Christian
El-Hage Scialabba, Nadia
Brüggemann, Judith
Isensee, Anne
Erb, Karl-Heinz http://orcid.org/0000-0002-8335-4159
Smith, Pete
Klocke, Peter
Leiber, Florian
Stolze, Matthias
Niggli, Urs
Article History
Received: 26 February 2016
Accepted: 15 September 2017
First Online: 14 November 2017
Competing interests<!--Emphasis Type='Bold' removed-->:
: The authors declare no competing financial interests.