PT - JOURNAL ARTICLE AU - Niels Henrik Hjollund AU - Ole Nørby Hansen TI - Fatigue and psychological states and traits in systemic lupus erythematosus: association or causation? DP - 2004 Apr 01 TA - The Journal of Rheumatology PG - 823--823 VI - 31 IP - 4 4099 - http://www.jrheum.org/content/31/4/823.short 4100 - http://www.jrheum.org/content/31/4/823.full SO - J Rheumatol2004 Apr 01; 31