Ihara, T
Hosokawa, Y
Kumazawa, K
Ishikawa, K
Fujimoto, J
Yamamoto, M
Muramkami, T
Goshima, N
Ito, E
Watanabe, S
Semba, K
Article History
Received: 31 January 2016
Revised: 11 August 2016
Accepted: 15 August 2016
First Online: 3 October 2016
Competing interests
: The authors declare no conflict of interest.