Despite medical technological advances, the major killers with which we must currently contend have remained essentially the same for the past few decades. Stroke, cancer, and heart disease together account for the vast majority of deaths in the United States. In addition, due to improved medical care, many Americans who would previously have died now survive these disorders, necessitating that they receive appropriate rehabilitation efforts. One result of our own medical advances is that we must now accept the high costs associated with providing quality care to individuals who develop one...