1. School of Pharmaceutical Science and Technology; Tianjin University; Tianjin China
2. Department of Health Research Methods, Evidence, and Impact; McMaster University; Hamilton Canada
3. School of Chinese Medicine; Hong Kong Baptist University; Hong Kong China
4. The First School of Clinical Medicine; Lanzhou University; Lanzhou China
5. Evidence-based Medicine Center, School of Basic Medical Sciences; Lanzhou University; Lanzhou China
6. School of Public Health; Lanzhou University; Lanzhou China
7. The First Affiliated Hospital of Xi'an Jiaotong University; Xi'an China