Pu, Shenghong
Nakagome, Kazuyuki
Miura, Akihiko
Iwata, Masaaki
Nagata, Izumi
Kaneko, Koichi
Article History
Received: 24 March 2016
Accepted: 8 July 2016
First Online: 28 July 2016
Competing interests
: The authors declare no competing financial interests.