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Authors
Yoshimura, Yukihiro
Sasaki, Hiroaki
Horiuchi, Hiroshi
Miyata, Nobuyuki
Kawakami, Chiharu
Usuku, Shuzo
Tachikawa, Natsuo
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Article History
Received: 31 December 2019
Accepted: 30 March 2020
First Online: 14 April 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This retrospective analysis is in accordance with the national ethical guidelines of Japan and with the 1964 Helsinki Declaration and its later amendments.
