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Authors
Nagase, Yoshikazu
Matsuzaki, Shinya https://orcid.org/0000-0001-5725-9994
Endo, Masayuki
Hara, Takeya
Okada, Aiko
Mimura, Kazuya
Hiramatsu, Kosuke
Kakigano, Aiko
Nakatsuka, Erika
Miyake, Tatsuya
Takiuchi, Tsuyoshi
Ueda, Yutaka
Tomimatsu, Takuji
Kimura, Tadashi
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Article History
Received: 9 July 2020
Accepted: 20 December 2020
First Online: 6 January 2021
Ethical approval and consent to participate
: This study was approved by the Osaka University Research Ethics Committee (Approval No. 19467, February 13, 2020) and was conducted in accordance with the Declaration of Helsinki. Informed consent was not required from the patients because of the retrospective nature of this study, which was based on computerized data and anonymous selection criteria.
: Not applicable.
: Shinya Matsuzaki is an Associate Editor for BMC Pregnancy and Childbirth. The authors declare no conflicts of interest (COI) about this study. All of authors have no competing financial interests regarding this study.
