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What do systematic reviews say?

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Evidence found and GRADE certainty

70 questions · 70 findings · 51 reviews · Pain, Palliative and Supportive Care

No studies found 9 · 12.9%GRADE not reported 3 · 4.3%Very low 42 · 60%Low 8 · 11.4%Moderate 8 · 11.4%High 0 · 0%