1 Department of Transfusion Medicine, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
2 Big Data and Engineering Research Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
3 Hospital Administration Office, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
4 Department of Medical Record Management Office, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.
5 Department of Otolaryngology, Head and Surgery, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China.