Volume 56, numéro 7 Vol. 56, 2001/HS1 - pagesPages 7 à 7EditorialPar Jean-Marie RobinePages 9 à 40Principles of Biodemography with special reference to Human LongevityPar D S. Judge, J. R. CareyPages 41 à 71Demographic Trends: Beyond the Limits?Par Jacques Vallin, Graziella CaselliPages 75 à 93Centenarians in Denmark In the Past and the PresentPar A. Skytthe, B. JeunePages 95 à 116The Healthy Longevity Survey and the Active Life Expectancy of the Oldest Old in China.Par Xiao Zhenyu, James W. Vaupel, Zeng YiPages 117 à 138Survival Among Belgian Centenarians (1870-1894 Cohorts)Par Liu Yuzhi, Zhang Chunyuan, M. Foulon, Dany Chambre, Michel PoulainPages 139 à 156The Demography of Centenarians in England and WalesPar R. ThatcherPages 159 à 171Mode and Dispersion of the Length of LifePar Vainö KannistoPages 173 à 193Redefining the Stages of the Epidemiological Transition by a Study of the Dispersion of Life Spans: The Case of FrancePar Jean-Marie RobinePages 197 à 221Biodemographic Study of Familial Determinants of Human LongevityPar Natalia S. Gavrilova, Leonid A. GavrilovPages 223 à 235Maternal and Paternal Lines of Familial LongevityPar T.B.L. Kirkwood, R.-G. WestendorpPages 237 à 241Is Longevity Inherited? A Comparison of the Ancestors of Two of the World's Oldest Inhabitants.Par B. DesjardinsPages 245 à 258Demographic Insights into LongevityPar James W. VaupelPages 261 à 264Abstracts