Text and Data Mining valid from 2018-09-19
Received: 19 March 2018
Accepted: 13 August 2018
First Online: 19 September 2018
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of China Medical University. All subjects and/or patient guarantors provided written informed consent for participation in this study. This study was designed and performed according to the most recent version of the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.
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