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Article History

Received: 19 July 2018

Accepted: 8 October 2018

First Online: 20 October 2018

Ethics approval

: All procedures were approved by the Sun Yat-Sen University Animal Care and Use Committee and carried out in accordance with the National Institutes of Health Guide for the Care and Use of Laboratory Animals.

: Not applicable.

: The authors declare that they have no competing interests.

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