Ogiwara, Shigetoshi http://orcid.org/0000-0001-9650-5852
Tamura, Takuya
Sai, Shuji
Nojima, Masanori
Kawana, Shin
Article History
Received: 29 March 2021
Revised: 4 June 2021
Accepted: 10 June 2021
First Online: 19 June 2021
Declarations
:
: The study was conducted with the approval of the ethics committee of our hospital (ethics approval number rin2014-27).
: Written informed consent was obtained from all individual parents. All the methods were conducted following the relevant guidelines, regulations, and the Declaration of Helsinki.
: Written informed consent was obtained from all individual parents included in the study.
: The authors declare no competing interests.