1. Department of Elder Gansu Provincial Hospital Lanzhou Gansu China
2. Evidence‐Based Medicine Center Institute of Traditional Chinese and Western Medicine School of Basic Medical Sciences Lanzhou University Lanzhou Gansu China
3. Department of Nursing Gansu Provincial Hospital School of Nursing Lanzhou University Lanzhou Gansu China
4. School of Nursing Lanzhou University Lanzhou Gansu China
5. Department of Nursing Gansu Provincial Hospital Lanzhou Gansu China