[1] MIT, Dept Elect Engn & Comp Sci, David H Koch Inst, Inst Med Engn & Sci, Cambridge, MA 02139 USA
[2] MIT, Howard Hughes Med Inst, Cambridge, MA 02139 USA
[3] Brigham & Womens Hosp, Div Med, Boston, MA 02115 USA
[4] Univ Illinois, Dept Bioengn, Urbana, IL 61801 USA
[5] Univ Penn, Perelman Sch Med, Inst Regenerat Med, Philadelphia, PA 19104 USA
[6] Univ Pittsburgh, Sch Med, Childrens Hosp Pittsburgh UPMC, Dept Surg, Pittsburgh, PA 15224 USA
[7] McGowan Inst Regenerat Med, Pittsburgh, PA 15224 USA