Highlights • The guidance on excluding non-English literature in evidence synthesis may not be suitable for topics where studies are likely to be from a non-English geography.• The routine practice… Click to show full abstract
Highlights • The guidance on excluding non-English literature in evidence synthesis may not be suitable for topics where studies are likely to be from a non-English geography.• The routine practice of developing search strategies may not fit the rapidly changing concepts such as COVID-19 and we need living search strategies.• Out-of-date publishing and indexing policies need to be updated.
               
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