Funding for this research was provided by:
Hongkou District Health Bureau (200000RMB)
Article History
Received: 11 November 2019
Accepted: 27 August 2020
First Online: 9 September 2020
Compliance with ethical standards
:
: Drs. Qisheng Zhang, Yucui Shen, Jianhua Xu, Bing Han, and Peng Gao have no conflicts of interest or financial ties to disclose.