Liu, Fanwei
Shimakami, Tetsuro
Murai, Kazuhisa
Shirasaki, Takayoshi
Funaki, Masaya
Honda, Masao
Murakami, Seishi
Yi, Minkyung
Tang, Hong
Kaneko, Shuichi
Article History
Received: 29 March 2016
Accepted: 11 July 2016
First Online: 3 August 2016
Competing interests
: The authors declare no competing financial interests.