Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

28 questions · 28 findings · 15 reviews · Airways

No studies found 5 · 17.9%GRADE not reported 0 · 0%Very low 3 · 10.7%Low 13 · 46.4%Moderate 6 · 21.4%High 1 · 3.6%