Seronegative Neuromyelitis Optica Spectrum - The challenges on disease definition and pathogenesis. Sato D K, Callegaro D, Lana-Peixoto M A, Nakashima I, Fujihara K Arq Neuropsiquiatr. 2014 Jun; 72(6):445-50. PMID: 24964112. Abstract CommentRecommendBookmarkWatch