1. Nursing Department, The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District, Changsha 410013, China
2. Xiang Ya Nursing School, Central South University, 172 Tongzipo Road, Yuelu District, Changsha 410013, China
3. Department of Obstetrics and Gynecology, The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District, Changsha 410013, China
4. Department of Geriatrics, The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District, Changsha 410013, China
5. Department of Pediatric Intensive Care Unit, The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District, Changsha 410013, China
6. Department of Emergency Pediatrics, The Third Xiangya Hospital of Central South University, 138 Tongzipo Road, Yuelu District, Changsha 410013, China