Funding for this research was provided by:
Japanese Clinical Orthopaedic Association (N/A)
Japanese Society for Musculoskeletal Medicine (N/A)
Text and Data Mining valid from 2019-04-09
Received: 21 August 2018
Accepted: 28 March 2019
First Online: 9 April 2019
Ethics approval and consent to participate
: All procedures performed in studies involving human participants were conducted in accordance with the ethical standards of the institutional and/or national research regulations, and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Written informed consent was obtained from all participants, and the study protocol was approved by the institutional review board of the Japanese Clinical Orthopaedic Association (approval number: 2015–01).
: Not applicable.
: The funding body or device providers had no role in the study design, data collection, data analysis, data interpretation, or writing of the manuscript.
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