Funding for this research was provided by:
Sichuan Province Science and Technology Support Program (2019YJS0221, 2017FZ0042)
Article History
Received: 14 January 2020
Accepted: 17 May 2020
First Online: 30 May 2020
Ethics approval and consent to participate
: This study was approved by the Ethics Committees of the Sichuan Academy of Medical Sciences and Sichuan Provincial People’s Hospital and consent was waived.
: Not Applicable.
: The authors declare that they have no competing interests.