Acknowledgments
We would like to thank the staff at the National Center for Child Health and Development. The authors also thank the medical editors from the Division of Education for Clinical Research at the National Center for Child Health and Development for professionally editing this manuscript.
This study was supported in part by a grant from the National Center for Child Health and Development (grant no, 2020A-1) and by the Japan Society for the Promotion of Science through Grants-in-Aid for Scientific Research (KAKENHI) (grant no, 19K17316).