Funding for this research was provided by:
National Basic Research Program of China (973 Program) (2018YFC0115604)
National Natural Science Foundation of China (81773208)
Joint Research Fund for Overseas Chinese Scholars and Scholars in Hong Kong and Macao (81761168038)
Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support (SML20180501)
Received: 14 February 2019
Accepted: 27 May 2019
First Online: 4 June 2019
Ethics approval and consent to participate
: The study was approved by the ethics committee of Tiantan Hospital, and the written informed consent was obtained from all patients.
: Not applicable.
: The authors declare that they have no competing interests.