Lu, Z
Yang, H
Sutton, M N
Yang, M
Clarke, C H
Liao, W S-L
Bast, R C Jr
Article History
Received: 6 June 2013
Revised: 10 March 2014
Accepted: 11 March 2014
First Online: 25 April 2014
Competing interests
: The authors declare no conflict of interest.