Jakob, Michael
Steckel, Jan Christoph
Klasen, Stephan
Lay, Jann
Grunewald, Nicole
MartÃnez-Zarzoso, Inmaculada
Renner, Sebastian
Edenhofer, Ottmar
Article History
Received: 27 November 2013
Accepted: 12 August 2014
First Online: 29 October 2014
Competing interests
: The authors declare no competing financial interests.