Shibata, Yuka http://orcid.org/0000-0003-3752-5946
Yabe, Ichiro http://orcid.org/0000-0002-1734-7997
Matsushima, Masaaki http://orcid.org/0000-0001-6585-3686
Hashimoto, Naoki
Yamada, Takahiro http://orcid.org/0000-0002-5370-7873
Sasaki, Hidenao
Article History
Received: 28 December 2018
Revised: 22 February 2019
Accepted: 23 February 2019
First Online: 13 March 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was conducted with the approval of the Hokkaido University Hospital Institutional Review Board.