Takahashi, Haruko
Kato, Keisuke
Ueyama, Kenji
Kobayashi, Masayoshi
Baik, Gunwoong
Yukawa, Yasuhiro
Suehiro, Jun-ichi
Matsunaga, Yukiko T.
Article History
Received: 2 September 2016
Accepted: 9 January 2017
First Online: 10 February 2017
Competing interests
: The authors declare no competing financial interests.