Acknowledgments
The work was supported by grants from National Science Council, Taiwan (NSC-100-2314-B-039-034) and China Medical University Hospital, Taichung, Taiwan (# DMR104-083).
Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Employment or leadership: None declared.
Honorarium: None declared.
Competing interests: The funding organization(s) played no role in the study design; in the collection, analysis, and interpretation of data; in the writing of the report; or in the decision to submit the report for publication.
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