1. Department of Hepatobilology, General Hospital of Ningxia Medical University, Yin Chuan, China
2. Department of Neonatal Intensive Care Unit, General Hospital of Ningxia Medical University, Yin Chuan, China
3. Department of Nursing, General Hospital of Ningxia Medical University, Yin Chuan, China
4. Department of School of Nursing, Ningxia Medical University, Yin Chuan, China