Funding for this research was provided by:
National Natural Science Foundation of China (81770190)
Text and Data Mining valid from 2020-03-12
Received: 15 November 2019
Accepted: 5 March 2020
First Online: 12 March 2020
: The authors declare that they have no competing interests.
: The study was performed in accordance with the modified Helsinki Declaration, and the protocol was approved by our ethical review boards before study initiation. Informed consent was obtained from the donors and recipients.
: Not applicable.