1. The David H. Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
2. Center for Regenerative Therapeutics, Biomedical Research Institute, Brigham and Women’s Hospital, Boston, MA 02115, USA.
3. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
4. Division of Rheumatology, Immunology and Allergy, Brigham and Women’s Hospital, Boston, MA 02115, USA.
5. Harvard Medical School, Boston, MA 02115, USA.
6. Division of Gastroenterology, Hepatology and Endoscopy, Brigham and Women’s Hospital, Boston, MA 02115, USA.
7. Miraca Life Sciences, Newton, MA 02464, USA.
8. Institute for Stem Cell Biology and Regenerative Medicine (inStem), Bangalore 560065, India.
9. Weill Cornell Medical College, New York, NY 10065, USA.
10. Division of Gastroenterology, Massachusetts General Hospital, Boston, MA 02114, USA.
11. Harvard–Massachusetts Institute of Technology Division of Health Sciences and Technology, Cambridge, MA 02139, USA.
12. Harvard Stem Cell Institute, Cambridge, MA 02138, USA.