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Authors
Hamada, Shohei
Ichiyasu, Hidenori https://orcid.org/0000-0003-1773-8485
Ikeda, Tokunori
Inaba, Megumi
Kashiwabara, Kosuke
Sadamatsu, Tomoki
Sato, Nahoko
Akaike, Kimitaka
Okabayashi, Hiroko
Saruwatari, Koichi
Tomita, Yusuke
Saeki, Sho
Hirata, Naomi
Yoshinaga, Takeshi
Fujii, Kazuhiko
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Article History
Received: 7 October 2018
Accepted: 24 March 2019
First Online: 2 April 2019
Ethics approval and consent to participate
: This study protocol was approved by the institutional human ethics review board of Kumamoto University Hospital (approval number: 1448). Because this was a retrospective study and included no therapeutic intervention, the institutional human ethics review board of Kumamoto University Hospital and other three affiliated hospitals waived the need for written informed consent.
: 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.
