1. Department of Critical Care Medicine Lanzhou University Second Hospital Lanzhou, Gansu China
2. School of Nursing Lanzhou University Lanzhou, Gansu China
3. Department of Surgical Oncology Lanzhou University Second Hospital Lanzhou, Gansu China
4. Department of Emergency Lanzhou University Second Hospital Lanzhou, Gansu China
5. Department of Nursing Lanzhou University Second Hospital Lanzhou, Gansu China
6. Department of Otorhinolaryngology Lanzhou University Second Hospital Lanzhou, Gansu China