1. Hebrew SeniorLife, Hinda and Arthur Marcus Institute for Aging Research, Boston, Massachusetts
2. Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
3. Division of Infectious Diseases, Brown University, Providence, Rhode Island
4. Palliative Care Program, Division of Geriatric Medicine, University of North Carolina at Chapel Hill, Chapel Hill
5. Division of Primary Care Medicine, University Hospitals of Geneva, Geneva, Switzerland
6. School of Nursing, University of North Carolina at Chapel Hill, Chapel Hill
7. Department of Public Health Sciences, Pennsylvania State College of Medicine, Hershey
8. Frank Statistical Consulting LLC, Vashon, Washington