1. Evidence-Based Medicine Center, School of Basic Medical Sciences; Lanzhou University; Lanzhou China
2. Evidence-Based Nursing Center, School of Nursing; Lanzhou University; Lanzhou China
3. Evidence-Based Nursing Center; School of Nursing, Lanzhou University; Lanzhou China
4. Global Health Nursing, Graduate School of Nursing Science; St. Luke's International University; Tokyo Japan
5. Stroke Clinical Research Unit, Department of Neurology; West China Hospital, Sichuan University; Chengdu China
6. Department of Statistics; School of Public Health, Lanzhou University; Lanzhou China