Funding for this research was provided by:
National Natural Science Foundation of China (91442119)
Received: 5 March 2018
Revised: 9 August 2018
Accepted: 13 August 2018
First Online: 17 September 2018
Ethics approval and consent to participate
: The animal-related experiments and the isolation of human umbilical cord mesenchymal stem cells were approved by the ethics committee of the Affiliated Drum Tower Hospital of Nanjing University Medical School. All applicable institutional and national guidelines for the care and use of animals were followed.
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: The authors declare that they have no competing interests.
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