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Authors
Tachibana, Yoshiyuki https://orcid.org/0000-0001-9614-7477
Koizumi, Noriaki
Mikami, Masashi
Shikada, Kana
Yamashita, Sayaka
Shimizu, Mieko
Machida, Kazuyo
Ito, Hiroto
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Funding
Funding for this research was provided by:
Ministry of Health, Labour and Welfare (H25–Seishin–Wakate–013)
Ministry of Health, Labour and Welfare (20DA1009)
Ministry of Health, Labour and Welfare (H28–Sukoyaka–Ippan–005)
Japan Agency for Medical Research and Development (30AMED–6024)
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Article History
Received: 22 February 2019
Accepted: 25 June 2020
First Online: 29 July 2020
Ethics approval and consent to participate
: The study protocol was reviewed and approved by the Research Ethics Committee of the National Center for Child Health and Development, Japan: the NCCHD Social Medicine Ethics Committee (Reference number: 1235). All participants provided written informed consent to participate. This study adheres to CONSORT guidelines (See Additional file ).
: Not applicable.
: The authors declare that they have no competing interests.
