Serum IL-6, TNFalpha, p55 srTNFalpha, p75srTNFalpha, srIL-2alpha levels and disease activity in systemic lupus erythematosus. - Davas,E.M.; Tsirogianni,A.; Kappou,I.; Karamitsos,D.; Economidou,I.; Dantis,P.C. (Clin Rheumatol, 1999)