1. Department of Nursing Chinese Academy of Medical Sciences – Peking Union Medical College, Peking Union Medical College Hospital Beijing China
2. Institute of Basic Medical Sciences Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College Beijing China
3. Department of Information and Statistics Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital Beijing China
4. Department of Nursing Henan Provincial People’s Hospital Zhengzhou China
5. Department of Nursing The Second Affiliated Hospital Zhejiang University School of Medicine Hangzhou China
6. Department of Nursing Wuhan Union Hospital Wuhan China
7. Department of Nursing Sichuan Provincial People's Hospital Chengdu China
8. Department of Nursing The First Affiliated Hospital, Sun Yat‐sen University Guangzhou China