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Authors
Matsunuma, Ryoichi
Watanabe, Toru
Hozumi, Yasuo
Koizumi, Kei
Ito, Yasushi
Maruyama, Shoko
Ogura, Hiroyuki
Goto, Keigo
Mori, Hiroki
Sawai, Noriko
Shiiya, Norihiko
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Article History
Received: 8 January 2020
Accepted: 2 March 2020
First Online: 6 March 2020
Compliance with ethical standards
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: Ryoichi Matsunuma, Toru Watanabe, Yasuo Hozumi, Yasushi Ito, Shoko Maruyama, Hiroyuki Ogura, Keigo Goto, Hiroki Mori, Noriko Sawai, and Norihiko Shiiya declare that they have no conflict of interest to declare. Kei Koizumi reports personal fees from Pfizer.
: 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 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
