Funding for this research was provided by:
National Natural Science Foundation of China (81502694)
Postdoctoral Research Foundation of China (2015M570330)
Research Funds for the Central Universities (1191329835)
Key projects of Ningxia Natural Science Foundation (NZ15130)
Text and Data Mining valid from 2019-04-27
Received: 30 October 2018
Accepted: 12 April 2019
First Online: 27 April 2019
Ethics approval and consent to participate
: Ethical approval was obtained from the Research Ethics Committee of Fudan University and written consent was obtained from each patient.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.