@inbook{Ritchie1992,
author = {Ritchie, K. and Jagger, C. and Brayne, C. and Letenneur, L.},
title= {Dementia-free life expectancy: preliminary calculations for France and the United Kingdom},
year = {1992},
editor = {Robine, J. M.},
editor = {Mathers, C. D.},
editor = {Bone, M. R.},
editor = {Romieu, I. },
booktitle = {Calculation of health expectancies: Harmonization, consensus achieved and future perspectives},
publisher = {Colloque INSERM/John Libbey Eurotext Ltd},
}