Department of Pediatric Surgery, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China;
Department of Pediatric Surgery, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China;
Department of Pediatric Surgery, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China;
Department of Pediatric Surgery, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China;
Department of Pediatric Surgery, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China;
Department of Pediatric Surgery, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China;
Department of Pediatric Surgery, Beijing Children's Hospital, Capital Medical University, Beijing 100045, China;
urethra; hypospadias; surgical flaps; abnormalities;