Hoffmann, Thomas
Krug, Daniel http://orcid.org/0000-0002-3664-1884
Bozkurt, Nisa
Duddela, Srikanth
Jansen, Rolf
Garcia, Ronald
Gerth, Klaus
Steinmetz, Heinrich
MĂĽller, Rolf http://orcid.org/0000-0002-1042-5665
Article History
Received: 15 February 2017
Accepted: 24 January 2018
First Online: 23 February 2018
Competing interests
: The authors declare no competing financial interests.