Kishida, Kyoko
Maruyama, Yukio https://orcid.org/0000-0002-5602-8104
Asari, Kana
Nakao, Masatsugu
Matsuo, Nanae
Tanno, Yudo
Ohkido, Ichiro
Ikeda, Masato
Yokoyama, Keitaro
Yokoo, Takashi
Article History
Received: 17 February 2018
Accepted: 18 September 2018
First Online: 25 September 2018
Compliance with ethical standards
:
: Y.M. and M.I. have received scholarship funds from Baxter International, Inc. and Terumo Corporation. Y.T. has received research grants from Baxter International, Inc. No sources of funding had any direct involvement in the design or conduct of the study; the collection, management, analysis, or interpretation of data; or the preparation, review, or approval of the manuscript. No other authors have any conflicts of interest to declare.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee at which the studies were conducted (IRB approval number 29–286 (8902)) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: Written informed consent was not required because of the non-intervention and retrospective chart review design. We provided all individual participants a means to opt out in this study.