1. Nursing Department; Children's Hospital of Fudan University; Shanghai P.R. China
2. Pediatric Intensive care unit; Children's Hospital of Fudan University; Shanghai P.R. China
3. Operating room; Children's Hospital of Fudan University; Shanghai P.R. China
4. Pediatric Intensive care unit; Beijing Children's Hospital; Beijing P.R. China
5. Pediatric Intensive care unit; Children's Hospital of Chongqing Medical University; Chongqing P.R. China
6. Pediatric Intensive care unit; Shanghai Children's Medical Center; Shanghai P.R. China
7. Pediatric Intensive care unit; Children's Hospital of Shanghai; Shanghai P.R. China
8. Pediatric Intensive care unit; Wuhan Children's Hospital; Wuhan P.R. China
9. Pediatric Intensive care unit; Shenzhen Children's Hospital; Shenzhen P.R. China