Funding for this research was provided by:
National Natural Science Foundation of China (No.81472870)
CAMS Innovation Fund for Medical Sciences (No. 2016-I2M-1-002)
National Key Research and Development Program of China (No. 2016YFC0901501)
Received: 13 May 2020
Accepted: 7 September 2020
First Online: 22 September 2020
Ethics approval and consent to participate
: The study protocol was approved by the Research and Ethics Board of the Peking Union Medical College Hospital.Informed consent was obtained from all individual participants included in the study.
: Patients signed informed consent regarding publishing their data.
: The authors have no conflicts of interest to declare.