Ando, Takashi
Ooba, Nobuhiro
Mochizuki, Mayumi
Koide, Daisuke
Kimura, Koichi
Lee, Seitetz L.
Setoguchi, Soko
Kubota, Kiyoshi http://orcid.org/0000-0001-6092-8685
Article History
Received: 3 May 2018
Accepted: 16 November 2018
First Online: 26 November 2018
Ethics approval and consent to participate
: The study was approved by the ethics committee of the University of Tokyo (Ref No. 3705). The study used data already recorded and the ethics committee approved a waiver of informed consent.
: The authors declare that none of the authors have any competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.