1. Department of Mechanical, Aerospace, and Nuclear Engineering, Rensselaer Polytechnic Institute, Troy, New York.
2. Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts.
3. Department of Mechanical Engineering, Tufts University, Medford, Massachusetts.
4. Carl J. Shapiro Simulation and Skills Center, Beth Israel Deaconess Medical Center, Boston, Massachusetts.
5. Cambridge Health Alliance, Cambridge, Massachusetts.