Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

45 questions · 45 findings · 1 reviews · Airways

No studies found 8 · 17.8%GRADE not reported 5 · 11.1%Very low 2 · 4.4%Low 7 · 15.6%Moderate 20 · 44.4%High 3 · 6.7%