Institute of Medicine (U.S.). Division of Health Care Services ; Donaldson, Molla S. ; Institute of Medicine Staff ; Molla S. Donaldson, Karl D. Yordy, Kathleen N. Lohr, and Neal A. Vanselow ; Committee on the Future of Primary Care ; Lohr, Kathleen N. ; National Academy of Sciences ; Vanselow, Neal A. ; Yordy, Karl D.