Zhang, Yanfei
Fukui, Naoshi
Yahata, Mitsunori
Katsuragawa, Yozo
Tashiro, Toshiyuki
Ikegawa, Shiro
Lee, Ming Ta Michael
Article History
Received: 20 June 2016
Accepted: 12 September 2016
First Online: 30 September 2016
Competing interests
: The authors declare no competing financial interests.