Funding for this research was provided by:
National Key Research Program of China (2017YFC0840100 and 2017YFC0840103)
the Central Health Care Fund (W2015ZD02)
Text and Data Mining valid from 2019-11-14
Received: 2 April 2019
Accepted: 1 November 2019
First Online: 14 November 2019
Ethics approval and consent to participate
: The study was approved by the ethics committee of the People’s Liberation Army General Hospital, and each subject provided informed written consent.
: Not Applicable.
: The authors declare that they have no competing interests.