%0 Letter %T Double Stent Retriever Mechanical Embolectomy of a Refractory Onyx Embolus in the Basilar Artery. %A Zhang X %A Zhao G %A Jiang C %A Chen Z %J J Vasc Interv Radiol %V 33 %N 11 %D 11 2022 %M 35842026 %F 3.682 %R 10.1016/j.jvir.2022.07.005 %X