Text and Data Mining valid from 2018-08-06
Received: 28 May 2018
Accepted: 31 July 2018
First Online: 6 August 2018
Ethics approval and consent to participate
: We conducted this study in accordance with the Declaration of Helsinki. This study protocol was approved by the institutional review board of the Kitakyushu Municipal Medical Center on November 18, 2016 (no. 201701056). Written informed consent was obtained from all patients before treatment in accordance with the institutional protocol.
: Not applicable.
: The authors declare that they have no competing interests.
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