Takehara, Sayuri
Takaku, Yasuharu
Suzuki, Hiroshi
Ohta, Isao
Shimomura, Masatsugu
Hariyama, Takahiko
Article History
Received: 1 November 2017
Accepted: 10 January 2018
First Online: 26 January 2018
Competing Interests
: The authors declare that they have no competing interests.