Fujitsuka, N
Asakawa, A
Morinaga, A
Amitani, M S
Amitani, H
Katsuura, G
Sawada, Y
Sudo, Y
Uezono, Y
Mochiki, E
Sakata, I
Sakai, T
Hanazaki, K
Yada, T
Yakabi, K
Sakuma, E
Ueki, T
Niijima, A
Nakagawa, K
Okubo, N
Takeda, H
Asaka, M
Inui, A
Article History
Received: 15 May 2015
Revised: 1 December 2015
Accepted: 15 December 2015
First Online: 2 February 2016
Competing interests
: AI has received grant support from Tsumura. The other authors declare no conflict of interest.