Ormanns, Steffen
Altendorf-Hofmann, Annelore
Jackstadt, Rene
Horst, David
Assmann, Gerald
Zhao, Yue
Bruns, Christiane
Kirchner, Thomas
Knösel, Thomas
Article History
Received: 9 May 2015
Revised: 10 September 2015
Accepted: 18 September 2015
First Online: 15 October 2015
Competing interests
: The authors declare no conflict of interest.