Kano, Mikihiro http://orcid.org/0000-0003-2108-2028
Hihara, Jun
Kaneko, Mayumi
Uemura, Kenichiro
Ohge, Hiroki
Sueda, Taijiro
Article History
Received: 22 April 2019
Accepted: 16 July 2019
First Online: 20 July 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All procedures followed were in accordance with the ethical standards of the responsible committee on human experimentation (institutional and national) and with the Helsinki Declaration of 1964 and later versions. This study is a retrospective observational study, carried out by the opt-out method of our hospital website.
: For this type of study, formal consent is not required.