Oku, K Complement activation in patients with primary antiphospholipid syndrome. [electronic resource] - Annals of the rheumatic diseases Jun 2009 - 1030-5 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1468-2060 Standard No.: 10.1136/ard.2008.090670 doi Subjects--Topical Terms: AdolescentAdultAgedAntigen-Antibody Complex--analysisAntiphospholipid Syndrome--bloodBlood CoagulationCase-Control StudiesComplement Activation--immunologyComplement C3--analysisComplement C3a--analysisComplement C4--analysisComplement C4a--analysisConnective Tissue Diseases--immunologyCross-Sectional StudiesFemaleHumansMaleMiddle AgedRetrospective StudiesStatistics, NonparametricTumor Necrosis Factor-alpha--bloodYoung Adult