Kobayashi, Naoya
Wagatsuma, Toshihiro
Shiga, Takuya
Toyama, Hiroaki
Ejima, Yutaka
Yamauchi, Masanori
Funding for this research was provided by:
JSPS KAKENHI (19K18343)
Article History
Received: 24 December 2019
Accepted: 25 February 2020
First Online: 13 March 2020
Ethics approval and consent to participate
: Ethical approval was obtained from the Ethics Committee of Tohoku University Graduate School of Medicine (reference number: 2015-1-533). The requirement for informed consent was waived due to the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.