1. Department of Basic Medicine, Jiangsu Vocational College of Medicine, Yancheng, Jiangsu 224005, P.R. China
2. Department of Pediatrics Laboratory, Wuxi Children's Hospital, Wuxi, Jiangsu 214023, P.R. China
3. Department of Clinical Laboratory, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, Jiangsu 214023, P.R. China