PT - JOURNAL ARTICLE AU - Pierre Charles TI - 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’ AID - 10.1136/annrheumdis-2021-219986 DP - 2021 Feb 13 TA - Annals of the Rheumatic Diseases PG - annrheumdis-2021-219986 4099 - http://ard.bmj.com/content/early/2021/02/14/annrheumdis-2021-219986.short 4100 - http://ard.bmj.com/content/early/2021/02/14/annrheumdis-2021-219986.full