xvii, 70 pages : illustrations ; 23 cm.
R (Rand Corporation) ; R-4105-HCFA.
"Supported by the Health Care Financing Administration, U.S. Department of Health and Human Services." "The project was performed within the Rand/UCLA/Harvard Center for Health Care Financing Policy Research."--p.iii.
Bibliography, etc. Note
Includes bibliographical references (pages 67-70)