1. Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, China
2. Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Chongqing, China
3. Department of Respiratory Medicine, Children's Hospital of Chongqing Medical University, Chongqing, China
4. Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA