Kopp, Sascha
Warnke, Elisabeth
Wehland, Markus
Aleshcheva, Ganna
Magnusson, Nils E.
Hemmersbach, Ruth
Corydon, Thomas Juhl
Bauer, Johann
Infanger, Manfred
Grimm, Daniela
Article History
Received: 2 April 2015
Accepted: 19 October 2015
First Online: 18 November 2015
Competing interests
: The authors declare no competing financial interests.