1. Section of Palliative Care and Medical Ethics, Division of General Internal Medicine, University of Pittsbiurgh, Pittsburgh, Pennsylvania, USA.
2. Palliative Research Center (PaRC), University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
3. UPMC Hillman Cancer Center, Pittsburgh, Pennsylvania, USA.
4. College of Information Sciences and Technology, Penn State University, University Park, Pennsylvania, USA.
5. Division of Hematology and Oncology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.