Shirasawa, Takako
Ochiai, Hirotaka
Yoshimoto, Takahiko
Matoba, Masaaki
Sunaga, Yuma
Hoshino, Hiromi
Kokaze, Akatsuki
Funding for this research was provided by:
Grants-in-Aid from the Ministry of Education, Culture, Sports, Science, and Technology of Japan (25350854)
Article History
Received: 30 May 2017
Accepted: 30 January 2018
First Online: 7 February 2018
Ethics approval and consent to participate
: The study protocol was approved by the Medical Ethics Committee of Showa University School of Medicine (no. 127). Written informed consent to participate in this study was obtained from each child’s parent or guardian.
: Not applicable.
: The authors declare that they have no competing interests.
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