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Authors
Sonoda, Nozomi https://orcid.org/0000-0002-7013-4085
Takahata, Kaori
Tarumi, Wataru
Shinohara, Kazuyuki
Horiuchi, Shigeko
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Funding
Funding for this research was provided by:
Japan Society for the Promotion of Science (19K19698, 16K15939)
Japan Society for the Promotion of Science (17H01613)
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Article History
Received: 25 September 2020
Accepted: 31 January 2021
First Online: 24 February 2021
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of St. Luke’s International University, Tokyo, Japan on May 11, 2017. It was previously registered in the Clinical Trials Registry of University Hospital Information Network in Japan (). This study adheres to the CONSORT guidelines.The date of disclosure of study information and trial start was August 2, 2017. The objectives, methods, and other details of this study were explained to the participants. Written informed consent was obtained before participation in this study.
: Not applicable.
: Shigeko Horiuchi is an editorial board member of <i>BMC Pregnancy and Childbirth</i>. The other authors have no competing interests associated with this study.
