Primary Sjögren's syndrome patients with neuromyelitis optica spectrum disorders: clinical analysis of 4 cases and review of the literature
CHEN Jing-jiong, XU Dan, ZHAO Yu-wu
Chinese Journal of Contemporary Neurology and Neurosurgery . 2013, (5): 441 -446 .  DOI: 10.3969/j.issn.1672-6731.2013.05.016