1. Department of Pediatric Surgery, Guangzhou Institute of Pediatrics, Guangdong Provincial Key Laboratory of Research in Structural Birth Defect Disease, Guangzhou Women and Children's Medical Center Guangzhou Medical University Guangzhou China
2. Department of Central Laboratories Guangdong Second Provincial General Hospital Guangzhou China
3. Department of Pediatric Surgery Shengjing Hospital of China Medical University Shenyang China
4. Department of Pediatric Surgery Hunan Children's Hospital Changsha China
5. Department of Pediatric Surgery The First Affiliated Hospital of Zhengzhou University Zhengzhou China
6. Department of Pathology Children Hospital and Women Health Center of Shanxi Taiyuan China
7. Department of Pediatric Surgery The Second Affiliated Hospital of Xi'an Jiaotong University Xi'an China
8. Kunming Key Laboratory of Children Infection and Immunity, Yunnan Key Laboratory of Children's Major Disease Research Yunnan Institute of Pediatrics Research, Yunnan Medical Center for Pediatric Diseases, Kunming Children's Hospital Kunming China