Funding for this research was provided by:
National Science & Technology Pillar Program during the Twelfth Five-year Plan Period (2014BAI09B10)
Text and Data Mining valid from 2018-11-19
Received: 22 March 2018
Accepted: 1 November 2018
First Online: 19 November 2018
Ethics approval and consent to participate
: The ethics committee of West China Hospital of Sichuan University has approved the work and written informed consent was received from all participants prior to the study.
: Not applicable.
: The authors declare that they have no competing interests when conducting the research.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.