Yamamoto, Takako
Takenaka, Chiemi
Yoda, Yusuke
Oshima, Yasuhiro
Kagawa, Kenichi
Miyajima, Hiroshi
Sasaki, Tetsuji
Kawamata, Shin
Article History
Received: 25 August 2017
Accepted: 12 December 2017
First Online: 10 January 2018
Competing Interests
: The authors declare that they have no competing interests.