1. Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Center for Intestinal and Liver Inflammation Research, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
2. Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
3. Department of Gastroenterology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, People’s Republic of China
4. Division of Neonatology, Department of Pediatrics, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois
5. Department of Pathology, Feinberg School of Medicine, Northwestern University, Chicago, Illinois