Stoof-Leichsenring, Kathleen R.
Herzschuh, Ulrike
Pestryakova, Luidmila A.
Klemm, Juliane
Epp, Laura S.
Tiedemann, Ralph
Article History
Received: 26 November 2014
Accepted: 9 July 2015
First Online: 11 August 2015
Competing interests
: The authors declare no competing financial interests.