Funding for this research was provided by:
National Natural Science Foundation of China (81771757, 81601433, 81571587)
The National Key Research and Development Program of China (2016YFC0901500)
CAMS Innovation Fund for Medical Science (2017-I2M-3-001)
Received: 6 March 2020
Accepted: 23 April 2020
First Online: 4 May 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee of Peking Union Medical College Hospital. All patients consented to this study and signed a written informed consent.
: Yes, we obtained consent for publication from all authors in the manuscript.
: The authors declare that they have no competing interests.