1. Department of Medicine, Tulane University School of Medicine, New Orleans, Louisiana, USA.
2. Division of Geriatric and Palliative Medicine, Department of Medicine, University of Texas Houston School of Medicine, Houston, Texas, USA.
3. Medical Director, Palliative Medicine Program, Our Lady of the Lake Regional Medical Center, Baton Rouge, Louisiana, USA.
4. Department of Medicine, University of Texas Medical Branch, Galveston, Texas, USA.