Kong, Bo
Wu, Weiwei
Valkovska, Nataliya
Jäger, Carsten
Hong, Xin
Nitsche, Ulrich
Friess, Helmut
Esposito, Irene
Erkan, Mert
Kleeff, Jörg
Michalski, Christoph W.
Article History
Received: 4 September 2014
Accepted: 7 January 2015
First Online: 6 February 2015
Competing interests
: The authors declare no competing financial interests.