Misu, T., Fujihara, K., Kakita, A., Konno, H., Nakamura, M., Watanabe, S., Takahashi, T., Nakashima, I., Takahashi, H. and Itoyama, Y. (2007) Loss of aquaporin 4 in lesions of neuromyelitis optica: Distinction from multiple sclerosis. Brain: A Journal of Neurology, 130, 1224-1234.