TY - CHAP A1 - Thatcher, A.R. A1 - Kannisto, V. A1 - Vaupel, J.W. T1 - The force of mortality at ages 80 to 120 Y1 - 1998 A3 - Jeune, B. A3 - Vaupel, J.W. T2 - Odense Monographs on Population Aging 5 CY - Odense PB - Odense University Press ER -