Funding for this research was provided by:
2016 perioperative orthopeadic blood management research project from China International Medical Exchange Foundation
Received: 1 June 2021
Accepted: 20 August 2021
First Online: 3 September 2021
: The study protocol was approved by our institutional review board (Ethics Committee of Peking Union Medical College Hospital, Number: ZS1244) and is registered in the Chinese Clinical Trial Registry (Number: ChiCTR-INR-16010270). Written informed consent and research authorization for participation in this study were obtained from each patient before surgery. IRB is in the attachments
: All the authors listed have approved the publication.
: The authors declare that they have no competing interests.