1. Washington University School of Medicine in St. Louis, Department of Medicine, Division of Palliative Medicine, St. Louis, MO, USA
2. The Brown School at Washington University in St. Louis, St. Louis, MO, USA
3. University of Pennsylvania School of Nursing, Department of Biobehavioral Health Sciences, Philadelphia, PA, USA
4. University of Pennsylvania Perelman School of Medicine, Department of Biostatistics, Epidemiology and Informatics, Philadelphia, PA, USA
5. University of Missouri School of Medicine, Department of Family and Community Medicine, Columbia, MO, USA
6. Golfarb School of Nursing at Barnes-Jewish College, St. Louis, MO, USA