1. Department of Medicine, University of Washington, Seattle, Washington.
2. Division of Pulmonary and Critical Care, Department of Medicine, University of Washington, Seattle, Washington.
3. Seattle Cancer Care Alliance, Division of Medical Oncology, Department of Medicine, University of Washington, Fred Hutchinson Cancer Research Center, Seattle, Washington.
4. Division of Pulmonary and Critical Care, Department of Medicine, Medical University of South Carolina, Charleston, South Carolina.
5. Department of Biobehavioral Nursing and Health Systems, School of Nursing, University of Washington, Seattle, Washington.
6. College of Nursing, Medical University of South Carolina, Charleston, South Carolina.
7. VA Puget Sound Health Care System, Health Services Research and Development, Seattle, Washington.
8. Department of Bioethics and Humanities, School of Medicine, University of Washington, Seattle, Washington.
9. Department of Medicine and Duke Palliative Care, Duke University, Durham, North Carolina.