Yokose, Takahiro
Yamamoto, Seiichiro
Nagase, Takeshi
Kanai, Toshio
Takano, Kiminori
Fujii, Taku
Tsutsui, Mai
Nakagawa, Motohito
Ochiai, Hiroki
Kameyama, Kaori
Article History
Received: 22 December 2017
Accepted: 28 March 2018
First Online: 10 April 2018
Ethics approval and consent to participate
: Ethics approval and consent to publish has been obtained from the participant.
: Consent to publish has been obtained from the participant.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.