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Authors
Ishioka, Kunihiro
Ohtake, Takayasu
Moriya, Hidekazu
Mochida, Yasuhiro
Oka, Machiko
Maesato, Kyoko
Hidaka, Sumi
Kobayashi, Shuzo
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Article History
Received: 5 January 2018
Accepted: 4 July 2018
First Online: 18 July 2018
Ethics approval and consent to participate
: The study protocol was approved by the ethical committee of Tokushukai Group ethical committee (No.TGE00797-024, 3 March 2017).
: 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.
