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Authors
Hamano, Eika
Nishimura, Masaki
Mori, Hisae
Satow, Tetsu
Takahashi, Jun C.
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Article History
Received: 16 June 2020
Accepted: 8 September 2020
First Online: 14 September 2020
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the research committee of National Cerebral and Cardiovascular Center, and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Because no information that would allow identification of the patient was collected, individual patient consent was not required from patients. The opportunity to opt out of the study was always available to the research participants. This retrospective study was approved by the Ethics Committee of the National Cerebral and Cardiovascular Center (IRB approval no. M30–013).
: Not applicable.
: The authors declare that they have no competing interests.
