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Funding
Funding for this research was provided by:
National Natural Science Foundation of China (81100360)
Natural Science Foundation of Hunan province (2018JJ2562)
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Article History
Received: 17 February 2019
Accepted: 16 May 2019
First Online: 24 May 2019
Ethics approval and consent to participate
: Prior to participation, participants signed an informed consent form. The study was conducted in accordance with the Declaration of Helsinki II and was approved by Ethics Committee of The Second Xiangya Hospital of Central South University (Changsha, China).
: All participants signed informed consent for publication.
: The authors declare that they have no competing interests.
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