Funding for this research was provided by:
National Natural Science Foundation of China (81671685)
Text and Data Mining valid from 2019-11-12
Received: 17 March 2019
Accepted: 31 October 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: All patients had given informed consent, and the study design was approved by the Ethical Review Board of Zhongshan Hospital of Fudan University and complied with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.