1. Nursing College, Guangxi University of Chinese Medicine, Nanning, China
2. Nursing Faculty, Shanghai Donghai Vocational and Technical College, Shanghai, China
3. Gynecology Department 1, Nanning Maternity and Child Health Hospital, Nanning, China
4. Beihu Nanmian Community Health Service Center, Ruikang Hospital Affiliated to the Guangxi University of Chinese Medicine, Nanning, China.