1. Palliative and Advanced Illness Research Center, University of Pennsylvania, Philadelphia, PA.
2. Division of Pulmonary, Allergy, and Critical Care, Department of Medicine, University of Pennsylvania, Philadelphia, PA.
3. Department of Medical Ethics and Health Policy, University of Pennsylvania, Philadelphia, PA.
4. Department of Neurology, Massachusetts General Hospital and Brigham Women’s Hospital, Harvard University, Boston, MA.
5. University of Massachusetts Chan Medical School-Baystate, Springfield, MA.
6. Department of Medicine, University of California San Francisco, San Francisco, CA.
7. Department of Business Administration, Harvard Business School, Boston, MA.
8. Department of Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA.