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Authors
Yabe, Kiyoaki
Kouchi, Katsunori
Takenouchi, Ayako
Matsuoka, Aki
Kudou, Wataru
Nakata, Chikako
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Article History
Accepted: 29 September 2020
First Online: 9 October 2020
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.
: All procedures in this study were in accordance with the ethical standards of the institutional and/or national research committee and with the Declaration of Helsinki of 1964 (revised in 2013). This retrospective study was approved by the Ethics Committee of Tokyo Women’s Medical University.
: Informed consent was not required since this was a retrospective study.
