Southern Medical University, Sun Yat-sen University (SYSU) - School of Public Health, Guangzhou Medical University - Department of Pediatric Surgery, Guangzhou Medical University - Department of Radiology, Guangzhou Medical University - Guangzhou Women and Children's Medical Center, Guangzhou Medical University - Guangzhou Women and Children's Medical Center, Guangzhou Medical University - Guangzhou Women and Children's Medical Center, Hunan Children's Hospital, Guangzhou Medical University - Guangzhou Women and Children's Medical Center, Guangzhou Medical University - Guangdong Women and Children Hospital, Jinan University - Department of Radiology, Hunan Normal University, Maternal and Child Health Hospital of Foshan, Meizhou People's Hospital, Guangdong Medical University, Guangzhou Medical University - Department of Pediatric Surgery, Guangzhou Medical University - Department of Pediatric Surgery, Guangzhou Medical University - Department of Medical Ultrasonics, Guangzhou Medical University - Department of Medical Ultrasonics and Southern Medical University

Sun Yat-sen University (SYSU) - Sixth Affiliated Hospital, affiliation not provided to SSRN, South China University of Technology, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, Guangzhou Medical University - Department of Pediatric Surgery, Maternal and Child Health Care Hospital of Huadu, Sun Yat-sen University (SYSU), Sun Yat-sen University (SYSU) and affiliation not provided to SSRN

Guangzhou Medical University - Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University - Guangdong Provincial Clinical Research Center for Child Health, Guangzhou Medical University - Department of Medical Imaging, Guangzhou Medical University, Guangzhou Medical University, Guangzhou Medical University - Department of Medical Imaging, Guangzhou Medical University - Department of Medical Imaging, Guangzhou Medical University - Department of Medical Imaging, Guangzhou Medical University - Surgical Neonatal Intensive Care Unit and Guangzhou Medical University - Department of Pediatric Surgery