Institution: | 1. Basic Nursing Department, School of Nursing, Jilin University, Changchun, Jilin, China;2. Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, Jilin, China;3. Jiao Sun, Basic Nursing Department, School of Nursing, Jilin University, Changchun, Jilin, China. |