RT Journal Article SR Electronic T1 Response to: ‘Correspondence on ‘Historically controlled comparison of glucocorticoids with or without tocilizumab versus supportive care only in patients with COVID-19- associated cytokine storm syndrome: results of the CHIC study’’ by Klopfenstein et al JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP annrheumdis-2021-220787 DO 10.1136/annrheumdis-2021-220787 A1 Robert BM Landewé A1 Sofia Ramiro A1 Rémy L M Mostard YR 2021 UL http://ard.bmj.com/content/early/2021/06/23/annrheumdis-2021-220787.abstract AB