- Correspondence to Professor Ying-Chun Dai, Department of Epidemiology, Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou, China; ; Professor Xu-Fu Zhang, School of Traditional Chinese Medicine, Southern Medical University, Guangzhou, Guangdong, China;
- Received August 7, 2020
- Revised January 8, 2021
- Accepted February 5, 2021
- First published March 4, 2021.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.