Takahashi, Ken http://orcid.org/0000-0002-9592-4200
Nii, Masaki
Takigiku, Kiyohiro
Toyono, Manatomo
Iwashima, Satoru
Inoue, Nao
Tanaka, Noboru
Matsui, Kotoko
Shigemitsu, Sachie
Yamada, Mariko
Kobayashi, Maki
Yazaki, Kana
Itatani, Keiichi
Shimizu, Toshiaki
Article History
Received: 29 December 2017
Accepted: 17 August 2018
First Online: 28 August 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from the parents or legal guardians of all individual participants included in the study.