PT - JOURNAL ARTICLE AU - Gerda M Steup-Beekman AU - Bastiaan M A Gahrmann AU - Stefan C A Steens AU - Mark A van Buchem AU - Tom W J Huizinga TI - Seasonal variation of primary neuropsychiatric systemic lupus erythematosus. DP - 2006 Sep 01 TA - The Journal of Rheumatology PG - 1913--1914 VI - 33 IP - 9 4099 - http://www.jrheum.org/content/33/9/1913.short 4100 - http://www.jrheum.org/content/33/9/1913.full SO - J Rheumatol2006 Sep 01; 33