Kusuhara, Sentaro http://orcid.org/0000-0002-6458-539X
Katsuyama, Atsuko
Matsumiya, Wataru
Nakamura, Makoto
Article History
Received: 7 September 2017
Revised: 21 January 2018
Accepted: 10 February 2018
First Online: 21 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional review board (Kobe University Graduate School of Medicine) and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Subjects’ informed consent was not required since this was a retrospective review.