Iida, Takaya
Miura, Kenichiro
Ban, Hideki
Ando, Taro
Shirai, Yoko
Ishiwa, Sho
Shiratori, Atsutoshi
Kaneko, Naoto
Yabuuchi, Tomoo
Ishizuka, Kiyonobu
Takaiwa, Masanori
Suyama, Kazuhide
Hisano, Masataka
Hattori, Motoshi http://orcid.org/0000-0002-4309-8672
Article History
Received: 9 November 2020
Accepted: 6 January 2021
First Online: 27 January 2021
Compliance with ethical standards
:
: The authors have no conflict of interest to declare.
: This study was conducted in accordance with the ethical principles set out in the Declaration of Helsinki and the ethical guidelines for epidemiological studies issued by the Ministry of Health, Labour and Welfare, Japan. The Ethics Committee of the TWMU approved the study (approval no. 5528).
: Informed consent was waived by giving the patients' parents an opportunity to opt out.