Qiu, J J
Zeisig, B B
Li, S
Liu, W
Chu, H
Song, Y
Giordano, A
Schwaller, J
Gronemeyer, H
Dong, S
So, C W E
Article History
Received: 19 April 2014
Revised: 12 September 2014
Accepted: 15 September 2014
First Online: 16 December 2014
Competing interests
: The authors declare no conflict of interest.