US Department of Health and Human Services. National Institutes of Health. National Institute of Neurological Diseases and Stroke. NINDS Sjögren’s Syndrome Information Page. http://www.ninds.nih.gov/disorders/sjogrens/sjogrens.htm. Updated October 15, 2012. Accessed July 21, 2014.
Sjögren’s Syndrome Foundation. About Sjögren’s Syndrome. (2013). Accessed 7/21/2014 from http://www.sjogrens.org/home/about-sjogrens-syndrome.