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Doppler ultrasound, CT angiography, MR angiography, and contrast‐enhanced MR angiography versus intra‐arterial angiography for moderate and severe carotid stenosis in symptomatic patients

This protocol has been withdrawn

Reason for withdrawal from publication

This protocol has been published since 2008 but it has not progressed to the full review. After due consideration, it was agreed by the Cochrane Stroke Group Editorial Board that the protocol be withdrawn from publication.