[1] US Dept HHS, Off Assistant Secretary Planning & Evaluat, Washington, DC 20201 USA
[2] IBM Watson Hlth, Cambridge, MA 02142 USA
[3] Congress Budget Off, Retirement & Long Term Care Div, Washington, DC 20201 USA
[4] MedStar Washington Hosp Ctr, Washington, DC 20010 USA
[5] US Acute Hlth Care Solut, Canton, OH 44718 USA