TY - JOUR A1 - Schoeni, R.F. A1 - Freedman, V.A. A1 - Martin, L.G. T1 - Why is late-life disability declining? Y1 - 2008 DO - 10.1111/j.1468-0009.2007.00513.x JF - The Milbank Quarterly VL - 86 IS - 1 SP - 47 EP - -89 ER -