1. Center for Intestinal and Liver Inflammation Research, Division of Pediatric Gastroenterology, Hepatology and Nutrition, Department of Pediatrics, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
2. Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
3. Department of Gastroenterology, Linyi People's Hospital, Shandong University, Linyi, Shandong, China
4. Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA