Tsuboyama, Takahiro http://orcid.org/0000-0002-7243-1454
Hori, Yumiko
Hori, Masatoshi
Onishi, Hiromitsu
Tatsumi, Mitsuaki
Sakane, Makoto
Ota, Takashi
Tomiyama, Noriyuki
Article History
First Online: 15 February 2018
Compliance with ethical standards
:
: No funding was received for this study.
: 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 and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. For this type of study formal consent is not required.
: Statement of informed consent was not applicable since the manuscript does not contain any patient data.