Funding for this research was provided by:
Jiangsu Provincial Key Research and Development Plan (BE2018659)
Received: 22 January 2019
Accepted: 17 April 2019
First Online: 30 April 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of the First Affiliated Hospital of Soochow University.
: Not applicable.
: The authors declare that they have no competing interests.
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