Horn, Annemarie
Hennig, Janosch
Ahmed, Yasar L. http://orcid.org/0000-0002-4364-1372
Stier, Gunter
Wild, Klemens
Sattler, Michael
Sinning, Irmgard
Article History
Received: 3 July 2015
Accepted: 12 October 2015
First Online: 16 November 2015
Competing interests
: The authors declare no competing financial interests.