1. Hengyang Medical College, University of South China, University of South China, Hengyang, China
2. Department of Pediatrics, Hainan Women and Children’s Medical Center, Haikou, China
3. Department of Radiology, Hainan Women and Children’s Medical Center, Haikou, China
4. NHC Key Laboratory of Control of Tropical diseases, Hainan Medical University, Haikou, China