1 Division of Health Care Policy & Research, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA; Hospice and Palliative Care, VA Eastern Colorado Healthcare System, Department of Veterans Affairs, Aurora, CO, USA. Electronic address: cari.levy@va.gov.
2 Division of Pulmonary and Critical Care Medicine, University of Washington, Seattle, WA, USA; VA Puget Sound Health Care System Health Services Research and Development, Seattle, WA, USA.
3 College of Nursing, University of Colorado-Anschutz Medical Campus, Aurora, CO, USA.