1. Evidence-Based Nursing Center, School of Nursing, Lanzhou University , Lanzhou, Gansu , China
2. Department of Intensive Care Unit, The First Hospital of Lanzhou University , Lanzhou, Gansu , China
3. Evidence-Based Social Science Research Center, School of Public Health, Lanzhou University , Lanzhou, Gansu , China
4. Department of Social Medicine and Health Management, School of Public Health, Lanzhou University , Lanzhou, Gansu , China
5. Key Laboratory of Evidence-Based Medicine and Knowledge Translation of Gansu Province , Lanzhou, Gansu , China