1. Centre of Clinical Epidemiology and Methodology, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China.
2. Hospital Laboratory, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China.
3. Department of Pulmonary and Critical Care Medicine, Guangdong Second Provincial General Hospital, Guangzhou, Guangdong, China.
4. Guangdong Traditional Medical and Sports Injury Rehabilitation Research Institute, Guangdong Second Provincial General Hospital, Guangzhou, China.
5. Department of Health Research Methods, Evidence, and Impact, McMaster University, Hamilton, ON, Canada.