. . "1953-1987." . . "Verenigde Staten van Amerika" . . . . . . . . . . . . . . . . . . . . . "The Medical Costs of The Young and Old : A Forty Year Perspective" . "The medical costs of the young and old" . . . "The medical costs of the young and old : a forty year perspective" . . . . "The Medical Costs of The Young and Old a Forty Year Perspective"@en . . "The medical costs of the young and old a forty year perspective" . "The medical costs of the young and old a forty year perspective"@en . . "The medical costs of the young and old : a forty year perspective"@en . . . . . "The medical costs of the young and old: a forty year perspective" . . "National Bureau of Economic Research (Estados Unidos)" . . "Gesundheitskosten Lebensalter Jugendliche USA." . . "National Bureau of Economic Research" . .