Kaneko, Hidehiro http://orcid.org/0000-0003-2553-6170
Itoh, Hidetaka
Yotsumoto, Haruki
Kiriyama, Hiroyuki
Kamon, Tatsuya
Fujiu, Katsuhito
Morita, Kojiro
Michihata, Nobuaki
Jo, Taisuke
Takeda, Norifumi
Morita, Hiroyuki
Yasunaga, Hideo
Komuro, Issei
Funding for this research was provided by:
Ministry of Health, Labour and Welfare
Ministry of Education, Culture, Sports, Science and Technology, Japan (17H04141)
Article History
Received: 17 May 2020
Accepted: 11 January 2021
First Online: 25 January 2021
Ethics approval
: This study was approved by the Institutional Review Board of The University of Tokyo [3501-(3)]. We conducted this study in accordance with the Declaration of Helsinki. Because of the anonymous nature of this database, the requirement for informed consent was waived.
: Not applicable.
: The authors declare that they have no competing interests.