Onuki, Takuya
Kawamura, Tomoyuki
Kawabata, Shuntaro
Yamaoka, Masatoshi
Inagaki, Masaharu
Article History
Received: 16 July 2018
Accepted: 17 January 2019
First Online: 23 January 2019
Ethics approval and consent to participate
: The study was approved by the institutional review board of the Tsuchiura Kyodo General Hospital (approval Nos. 534 and 623). All patients and their parents provided informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.