Wang, H
Liu, B
Al-Aidaroos, A Q O
Shi, H
Li, L
Guo, K
Li, J
Tan, B C P
Loo, J M
Tang, J P
Thura, M
Zeng, Q
Article History
Received: 13 July 2015
Revised: 7 September 2015
Accepted: 8 September 2015
First Online: 12 October 2015
Competing interests
: The authors declare no conflict of interest.