RT Journal Article SR Electronic T1 Response to: ‘Antirheumatic drugs, B cell depletion and critical COVID-19: correspondence on ‘Clinical course of coronavirus disease 2019 (COVID-19) in a series of 17 patients with systemic lupus erythematosus under long-term treatment with hydroxychloroquine by Mathian et al’ by Notz et al JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP annrheumdis-2020-218795 DO 10.1136/annrheumdis-2020-218795 A1 Alexis Mathian A1 Zahir Amoura YR 2020 UL http://ard.bmj.com/content/early/2020/11/24/annrheumdis-2020-218795.abstract AB