1. Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, Department of Pediatrics, West China Second University Hospital Sichuan University Chengdu China
2. Department of Pediatrics Chengdu Shangjin Nanfu Hospital Chengdu China
3. Department of Ultrasonic Medicine, West China Second University Hospital Sichuan University Chengdu China
4. Department of Echocardiography, West China Hospital Sichuan University Chengdu China