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To the Editor.—For systematic reviews to be comprehensive and reliable, they need to include as many as possible relevant randomized controlled trials (RCTs) in any language. Excluding RCTs from a systematic review on the basis of language of publication can lead to loss of precision¹ and bias.² Most Chinese research is published in Chinese and is therefore not accessible to the Western world. The Cochrane Stroke Group, therefore, developed collaborative links to identify RCTs in the Chinese literature and to facilitate the conduct of systematic reviews both in stroke and other fields.

Methods

One of the authors (M.L.) searched by hand 5 leading Chinese medical and neurology journals that might publish RCTs relevant to stroke and the proceedings of 1 stroke conference (Table 1). Randomized controlled trials were defined as trials that reported random allocation to 1 of at least 2 intervention groups.³ We also searched MEDLINE for . . . [Full Text of this Article]

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