1. Division of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA.
2. Harvard Medical School, Boston, MA 02115, USA.
3. Liver Center, Gastrointestinal Division, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA.
4. Division of Infectious Diseases, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02139, USA.
5. The Ragon Institute of Massachusetts General Hospital, Massachusetts Institute of Technology and Harvard University, Boston, MA 02129, USA.