TY - JOUR A1 - Ting, L. A1 - Yang, C.Y. A1 - Anderson, J.J. T1 - Mortality increase in late-middle and early-old age: Heterogeneity in death processes as a new explanation Y1 - 2013 DO - 10.1007/s13524-013-0222-4 JF - Demography VL - 50 IS - 5 ER -