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Authors
Kodama, Hirotake
Koie, Takuya
Oikawa, Masaaki
Narita, Takuma
Tanaka, Toshikazu
Noro, Daisuke
Iwamura, Hiromichi
Tobisawa, Yuki
Yoneyama, Tohru
Hashimoto, Yasuhiro
Ohyama, Chikara
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Article History
Received: 21 August 2019
Accepted: 12 November 2019
First Online: 3 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: For this type of study, formal consent is not required. Pursuant to the provisions of the ethics committee and the ethic guideline in Japan, written consent was not required in exchange for public disclosure of study information in the case of retrospective and/or observational study using a material such as the existing documentation. The study information was open for the public consumption at ExternalRef removed.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
