1. Department of Surgery, Center for Drug Discovery and Translational Research, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA 02215, USA.
2. Wyss Institute of Biologically Inspired Engineering, Harvard University, 3 Blackfan Circle, Boston, MA 02115, USA.
3. Department of Biology and Biochemistry, Center for Network Systems Biology, Boston University School of Medicine, Boston, MA 02118, USA.
4. BIDMC Genomics, Proteomics, Bioinformatics and Systems Biology Center, Beth Israel Deaconess Medical Center, Boston, MA 02115, USA.
5. Geisel School of Medicine, Dartmouth College, Hanover, NH 03755, USA.
6. Division of Gastroenterology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02115, USA.