Funding for this research was provided by:
Japan Agency for Medical Research and Development (20le0110014h0002)
Received: 15 April 2021
Accepted: 12 July 2021
First Online: 23 August 2021
: The research will perform in accordance with the Declaration of Helsinki, and relevant guidelines and regulations. The study protocol was approved by the Institutional Review Board and Ethics Committee of the National Center for Child Health and Development, Tokyo, Japan (on 27 May 2020, Number 2019–143), Osaka Women’s and Children’s Hospital (on 17 August 2020, Number 1358), Sato Hospital (on 8 May 2020, Number S20200803), and Ehime Prefectural Central Hospital (on 7 July 2020, Number 2–25). All participant will provide written informed consent.
: Not applicable.
: The authors declare no conflicts of interest.