Hotta, Masatoshi http://orcid.org/0000-0001-6790-8804
Minamimoto, Ryogo
Yano, Hideaki
Gohda, Yoshimasa
Shuno, Yasutaka
Article History
Received: 16 November 2017
Accepted: 23 January 2018
First Online: 30 January 2018
Ethics approval and consent to participate
: Ethical approval: 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.Informed consent: Informed consent was waived by the Institutional Review Board because of the retrospective nature of the study and the analysis used anonymous clinical data.
: The authors declare that they have no competing interests.
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