Ando, Toshinori
Kudo, Yasusei
Iizuka, Shinji
Tsunematsu, Takaaki
Umehara, Hanako
Shrestha, Madhu
Matsuo, Toshihiro
Kubo, Tadahiko
Shimose, Shouji
Arihiro, Koji
Ogawa, Ikuko
Ochi, Mitsuo
Takata, Takashi
Article History
Received: 19 August 2016
Accepted: 1 December 2016
First Online: 5 January 2017
Competing interests
: The authors declare no competing financial interests.