1. School of Nursing, Southern Medical University, Guangzhou, China
2. Changsha Hospital for Maternal & Child Health Care, Changsha, China
3. Department of Pediatric Oncology, Sun Yat-Sen University Cancer Center, Guangzhou, China
4. Pediatric Intensive Care Unit (PICU), Guangzhou Women and Children’s Medical Center, Guangzhou, China
5. Department of Pediatrics, Nanfang Hospital, Southern Medical University, Guangzhou, China
6. School of Public Health, Southern Medical University, Guangzhou, China