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| Methods | Non‐random | |
| Participants | 19 | |
| Interventions | EC/IC bypass | |
| Outcomes | Death from all causes, any stroke during follow up | |
| Notes | — | |
| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Allocation concealment? | Low risk | A ‐ Adequate |
CBF: cerebral blood flow EC/IC bypass: extracranial to intracranial bypass rCBF: regional cerebral blood flow RCT: randomised controlled trial
