Funding for this research was provided by:
Natural Science Foundation of China (30801088)
Received: 8 October 2018
Accepted: 6 March 2019
First Online: 12 March 2019
Ethics approval and consent to participate
: All patients provided a written informed consent and ethical approval was given by the Medical Ethics Committee of the First Affiliated Hospital of Anhui Medical University with the following reference number:Quick-PJ2018-11-11.
: Not applicable.
: The authors declare that they have no competing interests.
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