Xing, Peng
Hahnke, Richard L
Unfried, Frank
Markert, Stephanie
Huang, Sixing
Barbeyron, Tristan
Harder, Jens
Becher, Dörte
Schweder, Thomas
Glöckner, Frank Oliver
Amann, Rudolf I
Teeling, Hanno
Article History
Received: 27 June 2014
Revised: 6 October 2014
Accepted: 23 October 2014
First Online: 5 December 2014
Competing interests
: The authors declare no conflict of interest.