[1] Shanghai Jiaotong University School of Medicine,Department of Pediatric Gastroenterology, Guizhou Branch of Shanghai Children’s Medical Center
[2] Guizhou provincial people’s hospital,Department of Endoscopy, Guizhou Branch of Shanghai Children’s Medical Center
[3] Shanghai Jiaotong University School of Medicine,Department of Pediatric Gastroenterology, Guizhou Branch of Shanghai Children’s Medical Center
[4] Guizhou provincial people’s hospital,undefined
[5] Shanghai Jiaotong University School of Medicine,undefined