Text and Data Mining valid from 2018-09-11
Received: 9 January 2018
Accepted: 24 August 2018
First Online: 11 September 2018
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Kagoshima University (reference number 25–80).
: Consent for publication was obtained from all patients included in this study.
: The authors declare that they have no competing interests.
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