Funding for this research was provided by:
The First Affiliated Hospital of the Xi’an Jiaotong University
Ewha Womans University
Article History
Received: 13 May 2020
Accepted: 21 May 2020
First Online: 4 June 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.