Ooi, K.
Inoue, N.
Matsushita, K.
Yamaguchi, H.
Mikoya, T.
Kawashiri, S.
Tei, K.
Article History
Received: 14 May 2019
Accepted: 10 December 2019
First Online: 17 December 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflicts of interest.
: Approval was given by Hokkaido University Hospital Ethics Committee (Ref. No 010-0285).
: Not required.