Funding for this research was provided by:
Young Scientists Fund (81600908)
Technology Development Fund of Nanjing Medical University (2017NJMU103)
Received: 20 February 2020
Revised: 5 July 2020
Accepted: 20 July 2020
First Online: 25 July 2020
Ethics approval and consent to participate
: This study was approved by the ethical committee of the Nanjing Medical University. All cells donors signed informed consent documents. The authors declare that they have no conflict of interest.
: Not applicable
: The authors have no competing interests to declare.