Funding for this research was provided by:
National Natural Science Foundation of China (81472303, 81572425)
Received: 30 September 2017
Accepted: 1 January 2018
First Online: 19 January 2018
Ethics approval and consent to participate
: The hospital ethics committee approved the protocol, and all patients provided gave consent for the utilization of their tissue samples in this study.
: The authors declare that they have no competing interests.
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