Decreased interleukin-1 beta levels in plasma rheumatoid arthritis patients after dietary supplementation with n-3 polyunsaturated fatty acids. - Espersen,G.T.; Grunnet,N.; Lervang,H.H.; Noelsen,G.L.; Thomsen,B.S.; Faarvang,K.L.; Dyerberg,J.; Ernst,E. (Clin Rheumatol, 1992)