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. 2022 Mar 30;9:841020. doi: 10.3389/fcvm.2022.841020

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Copyright © 2022 Gong, Chen, Wang, Zhong, Chen, Yan and Lou.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Flow chart of study population identification. AIS indicates acute ischemic stroke; AF, atrial fibrillation; CASE II, Computer-based Online Database of Acute Stroke Patients for Stroke Management Quality Evaluation; OAC, oral anticoagulation.