Zhang, Zhanqin
Zhu, Hongtao
Hu, Jianguo
Article History
Received: 19 September 2020
Revised: 3 January 2021
Accepted: 26 January 2021
First Online: 26 February 2021
Conflict of interest
: The authors declare no competing interests.
: The authors have approved the final manuscript for publication.
: The study was approved by the ethics committee of Chongqing Medical University.