Funaki, Satoru http://orcid.org/0000-0002-2388-617X
Ogawa, Kohei http://orcid.org/0000-0003-0997-2845
Ozawa, Nobuaki http://orcid.org/0000-0002-1748-1635
Hosoya, Satoshi http://orcid.org/0000-0003-3881-4192
Okamoto, Aikou http://orcid.org/0000-0002-5079-0464
Urayama, Kevin Y. http://orcid.org/0000-0002-1360-9531
Morisaki, Naho http://orcid.org/0000-0001-6151-4513
Sago, Haruhiko http://orcid.org/0000-0001-9387-1849
Funding for this research was provided by:
the Japan Society for the Promotion of Science (20K18181)
Takeda Science Foundation
Article History
Received: 28 October 2021
Accepted: 7 May 2022
First Online: 27 May 2022
Declarations
:
: All the authors declare that they have no conflicts of interest associated with the publication of this research.
: The registry of the Japan Society of Obstetrics and Gynecology Perinatal Database was conducted in accordance with the guidelines of the Declaration of Helsinki and other nationally valid regulations. The protocol for this study was approved by the Institutional Review Board at the National Center for Child Health and Development on November 29, 2018 (No. 1983).
: Informed consent was obtained in the form of an opt-out on the web site.