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Article History

Received: 29 January 2019

Accepted: 30 July 2019

First Online: 6 August 2019

Ethics approval and consent to participate

: The Zhengzhou University institutional research committee approved our study, and all participants signed an informed consent agreement for medical research before initial treatment. All the related procedures were consistent with Ethics Committee regulations.

: Not Applicable.

: The authors declare that they have no competing interests.