Study Exclusion reasons Rmk Reference
De Lorenzo, 2020 not relevant exposure EXCLUDED: no exposure to Tocilizumab.

De Lorenzo Pharmacol. Res. 2020; 152:104583 10.1016/j.phrs.2019.104583

Drechsel, 2020 Studies without separate analysis of the considered drug/class from other drugs/class EXCLUDED: analysis according to DMARD as a whole, with specific data only for TNF and Etanercept but not for other treatments.

Drechsel Rheumatology (Oxford) 2020; 59:603-612 10.1093/rheumatology/kez309