1. Department of Ultrasound, Children's Hospital of Chongqing Medical, University, Chongqing, China
2. Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China
3. National Clinical Research Center for Child Health and Disorders, Chongqing, China
4. National Clinical Key Cardiovascular Specialty, Chongqing, China
5. Key Laboratory of Children's Important Organ Development and Diseases of Chongqing Municipal Health Commission, Chongqing, China
6. Department of Radiology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing 400021, China