1. Department of Blood Transfusion Children's Hospital of Hebei Province Shijiazhuang Hebei China
2. Institute of Pediatric Research Children's Hospital of Hebei Province Shijiazhuang Hebei China
3. Key Laboratory for Medical Virology, National Health and Family Planning Commission, National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and Prevention Beijing China
4. Department of Laboratory Medicine Hebei General Hospital Shijiazhuang Hebei China