Association between maternal fish consumption during pregnancy and preterm births: the Japan Environment and Children's Study.

"Declarations Ethics approval and consent to participateThe JECS study protocol was reviewed and approved by the Ministry of the Environment’s Institutional Review Board on Epidemiological Studies and Ethics Committees of all participating institutions. The study was conducted according to the tenets of the Declaration of Helsinki. Written informed consent was obtained from all participants in the JECS. Consent for publicationNot applicable. Availability of data and materialData are unsuitable for public deposition due to ethical restrictions and the legal framework in Japan. It is prohibited by the Act on the Protection of Personal Information (Act No. 57 of 30 May 2003, amendment on 9 September 2015) to publicly deposit data containing personal information. Ethical Guidelines for Medical and Health Research Involving Human Subjects enforced by the Japan Ministry of Education, Culture, Sports, Science and Technology and the Ministry of Health, Labour and Welfare also restrict the open sharing of epidemiologic data. All inquiries about access to data should be sent to jecs-en@nies.go.jp. The person responsible for handling enquiries sent to this e-mail address is Dr Shoji F. Nakayama, JECS Programme Office, National Institute for Environmental Studies. Competing interestsThe authors declare that they have no competing interests. FundingThis work was funded by the Japan Environment and Children’s Study of the Ministry of Environment, Japan. The findings and conclusions of this article are solely the responsibility of the authors and do not represent the official views of the government. Authors’ contributionsK.I. analyzed the data and drafted the manuscript; M.T., M.Y., R.T., S.H., and C.K. contributed to the conception and methodology; R.S. contributed to data acquisition; M.K., T.S., M.S., and K.K. interpreted and critically reviewed the results and revised the manuscript. All authors read and approved the final manuscript. AcknowledgementsMembers of the JECS as of 2022: Michihiro Kamijima (principal investigator), Shin Yamazaki (National Institute for Environmental Studies, Tsukuba, Japan), Yukihiro Ohya (National Center for Child Health and Development, Tokyo, Japan), Reiko Kishi (Hokkaido University, Sapporo, Japan), Nobuo Yaegashi (Tohoku University, Sendai, Japan), Koichi Hashimoto (Fukushima Medical University, Fukushima, Japan), Chisato Mori (Chiba University, Chiba, Japan), Shuichi Ito (Yokohama City University, Yokohama, Japan), Zentaro Yamagata (University of Yamanashi, Chuo, Japan), Hidekuni Inadera (University of Toyama, Toyama, Japan), Michihiro Kamijima (Nagoya City University, Nagoya, Japan), Takeo Nakayama (Kyoto University, Kyoto, Japan), Tomotaka Sobue (Osaka University, Suita, Japan), Masayuki Shima (Hyogo Medical University, Nishinomiya, Japan), Hiroshige Nakamura (Tottori University, Yonago, Japan), Narufumi Suganuma (Kochi University, Nankoku, Japan), Koichi Kusuhara (University of Occupational and Environmental Health, Kitakyushu, Japan), and Takahiko Katoh (Kumamoto University, Kumamoto, Japan). This study was based on the jecs-ta-20190930. We are grateful to the JECS participants and individuals who performed data collection. Competing interests The authors declare that they have no competing interests."

"Funding This work was funded by the Japan Environment and Children’s Study of the Ministry of Environment, Japan. The findings and conclusions of this article are solely the responsibility of the authors and do not represent the official views of the government."