Funding for this research was provided by:
Natural Science Foundation of Jiangsu Province (BK20170133)
Received: 25 February 2020
Accepted: 4 June 2020
First Online: 12 June 2020
Ethics approval and consent to participate
: This study was approved by the institutional review boards of the Second Hospital of Nanjing (2017-LY-kt011).
: The authors declare that they have no competing interests.