Text and Data Mining valid from 2019-01-31
Received: 30 October 2018
Accepted: 18 January 2019
First Online: 31 January 2019
Ethics approval and consent to participate
: The experimental protocol was reviewed and approved by the Human Subjects Institutional Review Board at Chang Gung Memorial Hospital, Taiwan.
: Not applicable.
: The authors declare that they have no competing interests.
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