1. The Johns Hopkins University School of Medicine and Bloomberg School of Public Health, Baltimore, Maryland
2. Dartmouth Medical School, Hanover, New Hampshire
3. Palliative Care Program, Marshfield Clinic, Marshfield, Wisconsin
4. Dartmouth Medical School, Centre for Educational Outcomes at The C. Everett Koop Institute, and Dartmouth College, Hanover, New Hampshire
5. LDS Hospital and University of Utah, Salt Lake City, Utah, U.S.A.