Text and Data Mining valid from 2018-07-11
Received: 29 September 2017
Accepted: 20 June 2018
First Online: 11 July 2018
Ethics approval and consent to participate
: The ethics review committee of Okayama University Graduate School of Medicine granted ethical approval for the study (approval 1013) and was registered in the University Hospital Medical Network Clinical Trials Registry, reference UMIN000022805. The participants provided written informed consent.
: Not Applicable.
: The authors declare that they have no competing interests.
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