Funding for this research was provided by:
National Natural Science Foundation of China (No. 82071694, No. 81971437 and No. 81571487, No. 82071694, No. 81971437 and No. 81571487)
Science and Technology Commission of Shanghai Municipality (No. 21140904000 and No. 201409005800)
Received: 12 March 2022
Accepted: 22 August 2022
First Online: 31 August 2022
: All participants signed informed consent forms approved by the Shanghai Eighth Peoples’ Hospital Committee on the Use of Human Subjects in Medical Research. This study was retrospectively registered, which only obtained the abandoned tissue at birth (umbilical cord), and did not involve any human trials. Ethical approval of umbilical cord blood collection was obtained from the institutional Ethics Committee of Shanghai Eighth Peoples’ Hospital (No.2019002).
: Not applicable.
: The authors declare that they have no competing interests.