Kellnberger, Stephan
Assmann, Walter
Lehrack, Sebastian
Reinhardt, Sabine
Thirolf, Peter
Queirós, Daniel
Sergiadis, George
Dollinger, Günther
Parodi, Katia
Ntziachristos, Vasilis
Article History
Received: 4 February 2016
Accepted: 7 June 2016
First Online: 7 July 2016
Competing interests
: The authors declare no competing financial interests.