Funding for this research was provided by:
Grant-in-Aid for Scientific Research from the Japan Society for the Promotion of Science (JSPS) Overseas Research Fellowships
Grant from the General Insurance Association of Japan
Text and Data Mining valid from 2019-04-11
Received: 11 December 2018
Accepted: 6 March 2019
First Online: 11 April 2019
Ethics approval and consent to participate
: This study was approved by the Ethical Review Board of Japan Labor Health and Welfare Organization Spinal Injuries Center. We had all the necessary consent from the patients involved in the study, including consent to participate in the study where appropriate.
: Written informed consent for publication of their clinical details and/or clinical images was obtained from the patient.
: The authors declare that they have no competing interests.
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