Li, Z
Zhao, J
Tikhanovich, I
Kuravi, S
Helzberg, J
Dorko, K
Roberts, B
Kumer, S
Weinman, S A
Article History
Received: 10 March 2015
Revised: 17 August 2015
Accepted: 20 August 2015
First Online: 16 October 2015
Competing interests
: The authors declare no conflict of interest.