1. Department of Nosocomial Infection Management, Heping Hospital Affiliated to Changzhi Medical College Changzhi, Shanxi, China
2. Children’s Medical Center, The Second Xiangya Hospital, Central South University, Hunan, Changsha, China
3. School of Nursing, Hunan University of Traditional Chinese Medicine, Changsha, China
4. Pediatric department, The 940th Hospital of Joint Logistic Support Force of PLA, Lanzhou, Gansu, China