Miyazawa, Yasumasa
Guo, Xinyu
Varlamov, Sergey M.
Miyama, Toru
Yoda, Ken
Sato, Katsufumi
Kano, Toshiyuki
Sato, Keiji
Article History
Received: 27 September 2015
Accepted: 4 November 2015
First Online: 3 December 2015
Competing interests
: The authors declare no competing financial interests.