Liu, X-D
Yao, J
Tripathi, D N
Ding, Z
Xu, Y
Sun, M
Zhang, J
Bai, S
German, P
Hoang, A
Zhou, L
Jonasch, D
Zhang, X
Conti, C J
Efstathiou, E
Tannir, N M
Eissa, N T
Mills, G B
Walker, C L
Jonasch, E
Article History
Received: 20 February 2014
Revised: 4 June 2014
Accepted: 6 June 2014
First Online: 7 July 2014
Competing interests
: The authors declare no conflict of interest.