1. Division of Gastroenterology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
2. Center for Clinical Epidemiology and Biostatistics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
3. Division of Gastroenterology, Hepatology, and Nutrition, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA.
4. Department of Microbiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
5. Department of Biology, University of Pennsylvania, Philadelphia, PA 19104, USA.
6. Broad Institute of Massachusetts Institute of Technology (MIT) and Harvard University, Cambridge, MA 02142, USA.
7. Division of Child Development, Rehabilitation, and Metabolic Disease, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA.
8. Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
9. Department of Pathology and Laboratory Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA.
10. Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
11. Center for Microbiome Informatics and Therapeutics, MIT, Cambridge, MA 02139, USA.