Toyokawa, Satoshi http://orcid.org/0000-0003-0539-5729
Hasegawa, Junichi
Ikenoue, Tsuyomu
Asano, Yuri
Jojima, Emi
Satoh, Shoji
Ikeda, Tomoaki
Ichizuka, Kiyotake
Takeda, Satoru
Tamiya, Nanako
Nakai, Akihito
Fujimori, Keiya
Maeda, Tsugio
Masuzaki, Hideaki
Suzuki, Hideaki
Ueda, Shigeru
Article History
Received: 22 July 2020
Accepted: 27 August 2020
First Online: 10 September 2020
Ethics approval and consent to participate
: The study protocol was approved by the Institutional Review Board of the JOCSC (26-01). The use of the JSOG database was permitted by the Non-Profit Neonatal Research Network Japan Organization. Written informed patient consent was not obtained from study participants. However, patients were provided with an official flyer that contained an announcement of the implementation of a “case control study of cerebral palsy and the prevention of its recurrence.” Although the analysis was retrospective, the data for the anonymized JOCSC and the JSOG databases were collected in a normal clinical setting, ensuring that patient confidentiality was protected. All patient records/information were anonymized and de-identified prior to analysis and no personal data were used in the present study.
: All authors meet the appropriate authorship criteria, and they have read the manuscript and agreed to its being submitted for publication.
: The authors declare that they have no competing interests.