RT Journal Article SR Electronic T1 Nationwide epidemiological study of neuromyelitis optica in Japan JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 667 OP 668 DO 10.1136/jnnp-2017-317321 VO 89 IS 6 A1 Katsuichi Miyamoto A1 Kazuo Fujihara A1 Jun-ichi Kira A1 Nagato Kuriyama A1 Makoto Matsui A1 Akiko Tamakoshi A1 Susumu Kusunoki YR 2018 UL http://jnnp.bmj.com/content/89/6/667.abstract AB