Tanaka, Y
Tateishi, K
Nakatsuka, T
Kudo, Y
Takahashi, R
Miyabayashi, K
Yamamoto, K
Asaoka, Y
Ijichi, H
Tateishi, R
Shibahara, J
Fukayama, M
Ishizawa, T
Hasegawa, K
Kokudo, N
Koike, K
Article History
Received: 27 July 2016
Revised: 20 October 2016
Accepted: 23 October 2016
First Online: 12 December 2016
Competing interests
: The authors declare no conflict of interest.