1. School of Nursing, Dalian Medical University, Dalian, Liaoning, China
2. Department of Otolaryngology, The Second Hospital of Dalian Medical University, Dalian, Liaoning, China
3. Department of Traditional Chinese Medicine, The Second Hospital of Dalian Medical University, Dalian, Liaoning, China
4. Department of Center for Hemodialysis, The Second Hospital of Dalian Medical University, Dalian, Liaoning, China