RT Journal Article SR Electronic T1 Antibodies to domain I of β-2-glycoprotein I and IgA antiphospholipid antibodies in patients with ‘seronegative’ antiphospholipid syndrome JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 317 OP 319 DO 10.1136/annrheumdis-2014-206483 VO 74 IS 1 A1 Laura Cousins A1 Charis Pericleous A1 Munther Khamashta A1 Maria Laura Bertolaccini A1 Yiannis Ioannou A1 Ian Giles A1 Anisur Rahman YR 2015 UL http://ard.bmj.com/content/74/1/317.abstract AB