Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

86 questions · 86 findings · 13 reviews · ENT

No studies found 35 · 40.7%GRADE not reported 2 · 2.3%Very low 14 · 16.3%Low 15 · 17.4%Moderate 18 · 20.9%High 2 · 2.3%