1. Department of Emergency, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
2. Department of Haematology, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, P.R. China
3. Second Clinical College of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China