1. Nursing Department, Beijing Children’s Hospital, Capital Medical University, Beijing, People’s Republic of China
2. National Center for Children’s Health, Beijing, People’s Republic of China
3. Beijing Key Laboratory of Pediatric Hematology Oncology, Hematology Center, Beijing, People’s Republic of China
4. National Key Discipline of Pediatrics, Capital Medical University, Beijing, People’s Republic of China
5. Ministry of Education, Key Laboratory of Major Diseases in Children, Beijing, People’s Republic of China
6. Department II of Hematology Center, Haemophilia Comprehensive Care Center, Beijing Children’s HospitalCapital Medical University, Beijing, People’s Republic of China