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Authors
Tanaka, Hiroyuki
Yamana, Hayato
Matsui, Hiroki
Fushimi, Kiyohide
Yasunaga, Hideo
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Funding
Funding for this research was provided by:
Ministry of Health, Labour and Welfare (19AA2007, H30-Policy-Designated-004)
Ministry of Education, Culture, Sports, Science and Technology, Japan (17H04141)
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Article History
Received: 20 November 2019
Accepted: 27 March 2020
First Online: 10 April 2020
Compliance with ethical standards
:
: The authors declare that there is no conflicts of interest.
: This retrospective study was approved by the Institutional Review Board at The University of Tokyo and was conducted according to the principles of the Declaration of Helsinki. Because of the anonymous nature of the data, the requirement for informed consent from each patient was waived.
