All the respondents (1050) participated in March 2020 was invited and in total, 2000 respondents will be collected.
The second wave of the nationwide survey on COVID-19 implemented in March 2020 started at the end of October 2020.
- by Junyi Zhang
All the respondents (1050) participated in March 2020 was invited and in total, 2000 respondents will be collected.