Funding for this research was provided by:
National Key R&D Program of China (2018YFC2001800)
Received: 12 September 2019
Accepted: 11 March 2020
First Online: 24 March 2020
Ethics approval and consent to participate
: The study protocol was approved by the Clinical Research Ethics Committee of Peking University First Hospital (2017–1321) and registered on Chinese Clinical Trial Registry on July 6, 2017 (ExternalRef removed, ChiCTR-OOC-17011887). Written informed consents were obtained from all enrolled patients or their surrogates.
: Not applicable.
: The authors declare that they have no competing interests.