Tanaka, Yujiro http://orcid.org/0000-0003-4529-0489
Kohno, Michihiro
Hashimoto, Takao
Nakajima, Nobuyuki
Izawa, Hitoshi
Okada, Hirofumi
Ichimasu, Norio
Matsushima, Ken
Yokoyama, Tomoya
Article History
Received: 21 September 2019
Accepted: 27 December 2019
First Online: 9 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: The institutional review board of our hospital approved this retrospective study.For this type of study, formal consent was not required.
: Informed consent was obtained from all individual participants included in the study.