Yang, Weihong
Liu, Li
Li, Caixia
Luo, Ning
Chen, Rong
Li, Li
Yu, Fudong
Cheng, Zhongping
Funding for this research was provided by:
The research was funded by Shanghai Health Bureau
Article History
Received: 18 January 2018
Revised: 16 June 2018
Accepted: 9 July 2018
First Online: 5 September 2018
Conflict of interest
: The authors declare that they have no conflict of interest.