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. 2021 Jun 2;10(6):692. doi: 10.3390/pathogens10060692

Table 1.

Search Strategy.

Database Search Strategy
ClinicalTrials.gov COVID-19 AND (“cytokine” OR “hyperinflammation” OR “macrophage activation syndrome” OR “immune dysregulation” OR “hemophagocytic lymphohistiocytosis”). Restricted to interventional studies (clinical trials).
EU Clinical Trial Register COVID-19 AND (“cytokine” OR “hyperinflammation” OR “macrophage activation syndrome” OR “immune dysregulation” OR “hemophagocytic lymphohistiocytosis”).
WHO International Clinical Trials Registry Platform COVID-19 AND cytokine OR COVID-19 AND hyperinflammation OR COVID-19 AND macrophage activation syndrome OR COVID-19 AND immune dysregulation OR COVID-19 AND hemophagocytic lymphohistiocytosis.