Lanzhou University - Evidence-Based Medicine Center, Lanzhou University - Evidence-Based Medicine Center, Government of the United States of America - Centers for Disease Control and Prevention (CDC), St. Marianna University, Sichuan University, Chongqing Medical University, Central South University, Lanzhou University - The First Clinical Medical College, Sichuan University, Sichuan University, First People’s Hospital of Zigong, Northwest Minzu University, McMaster University, Lanzhou University, Lanzhou University - Evidence-Based Medicine Center, McMaster University, Shandong University, Beijing University of Chinese Medicine, Shandong University - Department of Biostatistics, Lanzhou University - Evidence-Based Social Science Research Center, McMaster University - Department of Health Research Methods, Evidence, and Impact (HEI) and Sichuan University - Center of Gerontology and Geriatrics