Funding for this research was provided by:
Japan Society for the Promotion of Science (17K16569)
Received: 21 November 2017
Accepted: 5 February 2018
First Online: 17 February 2018
Ethics approval and consent to participate
: The publication of the present study was undertaken in accordance with the ethical standards of our institution (17061947).
: Informed consent was obtained from the patient and his family for the publication of this report.
: The authors declare that they have no competing interests.
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