Schrenk-Siemens, Katrin
Wende, Hagen
Prato, Vincenzo
Song, Kun
Rostock, Charlotte
Loewer, Alexander
Utikal, Jochen
Lewin, Gary R https://orcid.org/0000-0002-2890-6352
Lechner, Stefan G
Siemens, Jan
Article History
Received: 6 October 2014
Accepted: 13 November 2014
First Online: 3 December 2014
Competing interests
: The authors declare no competing financial interests.