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S1
(2003 August). Handout on Health: Systemic Lupus Erythematosus [40 pages]. National Institute of Arthritis and Musculoskeletal and Skin Disease [On-line information]. Available FTP: http://www.niams.nih.gov/hi/topics/lupus/slehandout/index.htm

S2
Ginzler, E. and Tayar, J. (2004 May). Systemic Lupus Erythematosus [27 paragraphs]. American College of Rheumatology [On-line information]. Available FTP: http://www.rheumatology.org/public/factsheets/sle_new.asp?aud=pat

S3
(2007 January 12) Lupus [78 paragraphs] MayoClinic.com [On-line information]. Available FTP: http://www.mayoclinic.com/health/lupus/DS00115

S4
Nan Gustafson. Director of Education and Patient Services, Lupus Foundation of Minnesota.