1. School of Medicine, Tongji University, Shanghai, People’s Republic of China
2. Delivery Room, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, People’s Republic of China
3. Department of Nursing, Tongji Hospital, School of Medicine, Tongji University, Shanghai, People’s Republic of China
4. School of Nursing, The Hong Kong Polytechnic University, Kowloon, China
5. Department of General Surgery, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, People’s Republic of China
6. Emergency Department, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, People’s Republic of China
7. Department of Nursing, Shanghai Tenth People’s Hospital, School of Medicine, Tongji University, Shanghai, People’s Republic of China