1. Department of Nursing, Huaxin College of Hebei Geo University, Shijiazhuang, Hebei 050700, China
2. Shijiazhuang Vocational College of Technology and Information, Shijiazhuang, Hebei 050000, China
3. Hebei Yiling Hospital, Shijiazhuang, Hebei 050091, China
4. The First Hospital of Hebei Medical University, Shijiazhuang, Hebei 050031, China
5. Shijiazhuang Jilian Medical Secondary School, Shijiazhuang, Hebei 050071, China