Wu, Yaqiong
Nakagawa, Suguru
Takahashi, Hidenori
Kawabata, Yukari
Suzuki, Etsu
Uehara, Yoshio
Article History
Received: 25 September 2015
Revised: 11 November 2015
Accepted: 20 November 2015
First Online: 14 January 2016
Competing interests
: The authors declare no conflict of interest.
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