Cao, Yingchun
Hui, Jie
Kole, Ayeeshik
Wang, Pu
Yu, Qianhuan
Chen, Weibiao
Sturek, Michael
Cheng, Ji-Xin
Article History
Received: 11 January 2016
Accepted: 13 April 2016
First Online: 28 April 2016
Competing interests
: J.-X.C. and P.W. have a financial interest in Vibronix Inc, which does not support this work.