,
Ikeda, M
Takahashi, A
Kamatani, Y
Okahisa, Y
Kunugi, H
Mori, N
Sasaki, T
Ohmori, T
Okamoto, Y
Kawasaki, H
Shimodera, S
Kato, T
Yoneda, H
Yoshimura, R
Iyo, M
Matsuda, K
Akiyama, M
Ashikawa, K
Kashiwase, K
Tokunaga, K
Kondo, K
Saito, T
Shimasaki, A
Kawase, K
Kitajima, T
Matsuo, K
Itokawa, M
Someya, T
Inada, T
Hashimoto, R
Inoue, T
Akiyama, K
Tanii, H
Arai, H
Kanba, S
Ozaki, N
Kusumi, I
Yoshikawa, T
Kubo, M
Iwata, N
Article History
Received: 13 April 2016
Revised: 29 November 2016
Accepted: 13 December 2016
First Online: 24 January 2017
Competing interests
: During the conduct of the study; Drs Ikeda, Takahashi, Kamatani, Okamoto, Yoshimura, Matsuo, Itokawa, Ozaki and Iwata have received research support from the Ministry of Education, Culture, Sports and Technology (MEXT) of Japan and Japan Agency for Medical Research and Development (AMED); Drs Kusumi, Yoshikawa and Kubo have received research support from MEXT of Japan; Dr Kanba has received research support from AMED and the Ministry of Health Labour and Welfare; Dr Kunugi has received research support from MEXT of Japan, AMED and the Ministry of Health Labour and Welfare; and Dr Kato has received research support from MEXT of Japan, AMED of Japan and Japan Science and Technology Agency. The sponcors had no role in design and conduct of the study; collection, management, analysis and interpretation of the data; and preparation, review or approval of the manuscript. The remaining authors declare no conflicts of interest.