Wei, Wei
Isobe, Kazuo
Nishizawa, Tomoyasu
Zhu, Lin
Shiratori, Yutaka
Ohte, Nobuhito
Koba, Keisuke
Otsuka, Shigeto
Senoo, Keishi
Article History
Received: 18 August 2014
Revised: 22 December 2014
Accepted: 29 December 2014
First Online: 10 March 2015
Competing interests
: The authors declare no conflict of interest.