Findings

What do systematic reviews say?

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Evidence found and GRADE certainty

143 questions · 148 findings · 21 reviews · ENT

No studies found 67 · 45.3%GRADE not reported 0 · 0%Very low 59 · 39.9%Low 16 · 10.8%Moderate 6 · 4.1%High 0 · 0%