Numata, Masakatsu
Tamagawa, Hiroshi
Kazama, Keisuke
Kawahara, Shinnosuke
Sawazaki, Sho
Aoyama, Toru
Maezawa, Yukio
Kano, Kazuki
Higuchi, Akio
Godai, Teni
Saigusa, Yusuke
Saeki, Hiroyuki
Yukawa, Norio
Rino, Yasushi
Article History
Received: 31 August 2020
Accepted: 6 January 2021
First Online: 21 January 2021
Ethics approval and consent to participate
: The protocol for this research project has been approved by the Institutional Review Board of Yokohama City University, Approval No. 170700003. Because this study was a retrospective study, the Institutional Review Board of Yokohama City University admitted that the details of the study protocol was provided to patients via the hospital websites instead of written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.