1. Department of Pediatrics, Harvard Medical School, and
2. Division of Gastroenterology, Boston Children’s Hospital, Boston, MA 02115
3. Shanghai Children’s Hospital, Shanghai Jiaotong University, Shanghai 200000, China
4. F.M. Kirby Neurobiology Center, Translational Neuroscience Center, Boston Children’s Hospital and Harvard Medical School, Boston, MA 02115
5. Division of Genetics, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115
6. Harvard Digestive Disease Center, Harvard Medical School, Boston, MA 02115
7. Harvard Stem Cell Institute, Cambridge, MA 02138
8. Dana-Farber Cancer Institute, Harvard Medical School, Boston, MA 02115
9. Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114