Panel on the National Health Care Survey, Committee on National Statistics, Commission on Behavioral and Social Sciences and Education, National Research Council, Institute of Medicine ; Institute of Medicine Staff ; National Research Council Staff ; Perrin, Edward ; Richardson, William C. ; Wunderlich, Gooloo S. ; National Center for Health Statistics (U.S.) ; National Research Council (U.S.) ; Commission on Behavioral and Social Sciences and Education ; Committee on National Statistics ; Division of Behavioral and Social Sciences and Education ; Division of Health Care Services ; Institute of Medicine ; Panel on the National Health Care Survey ; Institute of Medicine (U.S.)