Soutome, Sakiko http://orcid.org/0000-0002-4646-587X
,
Hasegawa, Takumi
Yamguchi, Taihei
Aoki, Kumiko
Kanamura, Naritomo
Mukai, Takao
Yamazoe, Junichi
Nishikawa, Masaya
Isomura, Emiko
Hoshi, Kazuto
Umeda, Masahiro
Article History
Received: 15 May 2019
Accepted: 10 December 2019
First Online: 2 January 2020
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: This study was performed in accordance with the 1964 Declaration of Helsinki. Ethical approval was obtained from the Institutional Review Boards (IRB) of each participating hospital. As this was a retrospective study, the research plan was published on the homepage of the participating hospitals according to the instructions of the IRB in accordance with the guaranteed opt-out opportunity.