Huang, M
Koizumi, A
Narita, S
Inoue, T
Tsuchiya, N
Nakanishi, H
Numakura, K
Tsuruta, H
Saito, M
Satoh, S
Nanjo, H
Sasaki, T
Habuchi, T
Article History
Received: 11 September 2015
Revised: 23 November 2015
Accepted: 30 November 2015
First Online: 15 February 2016
Competing interests
: The authors declare no conflict of interest.