Ishii, Masayuki http://orcid.org/0000-0003-0726-6015
Hamabe, Atsushi
Okita, Kenji
Nishidate, Toshihiko
Okuya, Koichi
Usui, Akihiro
Akizuki, Emi
Satoyoshi, Tetsuta
Takemasa, Ichiro
Article History
Accepted: 29 November 2019
First Online: 14 December 2019
Compliance with ethical standards
: The protocol for this study was approved by the institutional review board of Sapporo Medical University Hospital.
: The authors declare that they have no conflicts of interest.