He, Qin
Wang, Lingshu
Zhao, Ruxing
Yan, Fei
Sha, Sha
Cui, Chen
Song, Jia
Hu, Huiqing
Guo, Xinghong
Yang, Mengmeng
Cui, Yixin
Sun, Yujing
Sun, Zheng
Liu, Fuqiang
Dong, Ming
Hou, Xinguo
Chen, Li
Funding for this research was provided by:
National Natural Science Foundation of China (81670706, 81873632, 81770818, 81800736, 81800727)
National Key R&D Program of China (2016YFC0901204, 2018YFC1311801)
Taishan Scholar Foundation of Shandong Province (ts201712089)
Natural Science Foundation of Shandong Province (ZR2019BH018)
Article History
Received: 9 March 2020
Revised: 5 April 2020
Accepted: 14 May 2020
First Online: 8 June 2020
Change Date: 20 October 2022
Change Type: Correction
Change Details: This article has been retracted. Please see the Retraction Notice for more detail:
Change Details: https://doi.org/10.1186/s13287-022-03191-6
Ethics approval and consent to participate
: With the approval of the Ethics Committee at Qilu Hospital of Shandong University, all participants provided informed consent for the use of the umbilical cord in this experimental study. All animal experiments were conducted in accordance with the Animal Ethics Committee of Shandong University.
: Not applicable.
: The authors declare that they have no competing interests.