Zhang, L
Li, H
Hu, X
Benedek, D M
Fullerton, C S
Forsten, R D
Naifeh, J A
Li, X
Wu, H
Benevides, K N
Le, T
Smerin, S
Russell, D W
Ursano, R J
Article History
Received: 22 December 2014
Revised: 9 March 2015
Accepted: 24 March 2015
First Online: 16 June 2015
Competing interests
: The authors declare no conflict of interest.