1) Whaley, K. and Alspaugh, M. A.: Sjögren's syndrome. Textbook of Rheumatology, 3 rd ed, Vol. 1., Edited by Kelly, W. N., Harris, E. D., Ruddy, S., Sledge, C. B., W. B. Saunders Company, Philadelphia, 1989, pp. 999-1019.
2) Alexander, E. L., Provost, T. T., Stevens, M. B., et al: Neurologic complications of primary Sjögren's syndrome. Medicine, 61: 247 -257, 1982.