Wang, Yichuan
Sui, Yongjun
Kato, Shingo
Hogg, Alison E.
Steel, Jason C.
Morris, John C.
Berzofsky, Jay A.
Article History
Received: 15 September 2014
Accepted: 15 December 2014
First Online: 20 January 2015
Competing interests
: The authors declare no competing financial interests.