RT Journal Article SR Electronic T1 Response to: Correspondence on ‘Anticardiolipin and other antiphospholipid antibodies in critically ill COVID-19 positive and negative patients’ by Trahtemberg et al JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP annrheumdis-2021-221780 DO 10.1136/annrheumdis-2021-221780 A1 Marvin J Fritzler A1 Uriel Trahtemberg A1 , YR 2021 UL http://ard.bmj.com/content/early/2021/11/21/annrheumdis-2021-221780.abstract AB