TY - JOUR A1 - Imai, K. A1 - Soneji, S. T1 - On the estimation of disability-free life expectancy: Sullivan's method and its extension. Y1 - 2007 DO - 10.1198/016214507000000040 JF - Journal of the American Statistical Association VL - 102 IS - 480 SP - 1199 EP - -1211 ER -