Zhang, Hong
Tan, Engkong
Suzuki, Yutaka
Hirose, Yusuke
Kinoshita, Shigeharu
Okano, Hideyuki
Kudoh, Jun
Shimizu, Atsushi
Saito, Kazuyoshi
Watabe, Shugo
Asakawa, Shuichi
Article History
Received: 10 July 2014
Accepted: 7 October 2014
First Online: 27 October 2014
Competing interests
: The authors declare no competing financial interests.