Sugiyama, Atsuhiko http://orcid.org/0000-0003-0705-9892
Yokota, Hajime
Yamanaka, Yoshitaka
Mukai, Hiroki
Yamamoto, Tatsuya
Hirano, Shigeki
Koide, Kyosuke
Ito, Shoichi
Kuwabara, Satoshi
Article History
Received: 10 January 2020
Accepted: 20 April 2020
First Online: 27 April 2020
Ethics approval and consent to participate
: This retrospective study was approved by the institutional review board of the Chiba University Graduate School of Medicine, and the need for informed consent was waived.
: Not applicable.
: The authors declare that they have no conflict of interest.