1 Duke Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina, USA; Duke Cancer Institute, Durham, North Carolina, USA.
2 Four Seasons Compassion for Life, Flat Rock, North Carolina, USA.
3 Duke Center for Learning Health Care, Duke Clinical Research Institute, Durham, North Carolina, USA.
4 University of Alabama - Birmingham, Birmingham, Alabama, USA.
5 Mayo Clinic, Rochester, Minnesota, USA.
6 American Academy of Hospice and Palliative Medicine, Rosemont, Illinois, USA.
7 University of Pittsburgh, Pittsburgh, Pennsylvania, USA.