1. Department of Pediatric Surgical Oncology; Children's Hospital of Chongqing Medical University; Chongqing China; Ministry of Education Key Laboratory of Child Development and Disorders; Key Laboratory of Pediatrics in Chongqing, CSTC2009CA5002
2. Clinical Research Center of Pediatrics; National Engineering Research Center of Ultrasound Medicine; Chongqing China
3. Institute of Ultrasonic Engineering in Medicine; Chongqing University of Medical Sciences; Chongqing China