1. School of Nursing, Jilin University, Changchun, Jilin, China
2. Hospital of Stomatology, Jilin University, Changchun, Jilin, China
3. Gastrointestinal Surgery, The Second Hospital of Jilin University, Changchun, Jilin, China
4. Department of Cataract, Eye Center, The Second Hospital of Jilin University, Changchun, Jilin, China