Ning, Bo
Sun, Naidi
Cao, Rui
Chen, Ruimin
Kirk Shung, K.
Hossack, John A.
Lee, Jin-Moo
Zhou, Qifa
Hu, Song
Article History
Received: 10 August 2015
Accepted: 16 November 2015
First Online: 21 December 2015
Competing interests
: The authors declare no competing financial interests.