Submitted on: 29 November 2022.
Revised on: 24 March 2023.
Accepted on: 23 April 2023.
___________________China CDC Weekly---CHINESE CENTER FOR DISEASE CONTROL AND PREVENTION
http://reply.papertrans.cn/1/53/5255/5255-12.png
http://reply.papertrans.cn/1/53/5255/5255-13.png
http://reply.papertrans.cn/1/53/5255/5255-14.png
Submitted on: 13 July 2022.
Revised on: 01 November 2022.
Accepted on: 26 December 2022.
___________________China CDC Weekly---CHINESE CENTER FOR DISEASE CONTROL AND PREVENTION
http://reply.papertrans.cn/1/53/5255/5255-16.png
http://reply.papertrans.cn/1/53/5255/5255-17.png
Submitted on: 22 January 2001.
Revised on: 08 March 2001.
Accepted on: 22 April 2001.
___________________China CDC Weekly---CHINESE CENTER FOR DISEASE CONTROL AND PREVENTION
Submitted on: 18 May 2023.
Revised on: 15 July 2023.
Accepted on: 07 September 2023.
___________________China CDC Weekly---CHINESE CENTER FOR DISEASE CONTROL AND PREVENTION
Submitted on: 08 June 2023.
Revised on: 09 September 2023.
Accepted on: 02 October 2023.
___________________China CDC Weekly---CHINESE CENTER FOR DISEASE CONTROL AND PREVENTION