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Authors
Okumura, Takahiro
Kimura, Yuki
Murohara, Toyoaki
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Article History
Received: 22 June 2019
Revised: 3 July 2019
Accepted: 3 July 2019
First Online: 30 July 2019
Compliance with ethical standards
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: The authors declare that they have no conflict of interest.
Free to read: This content has been made available to all.
