@article{Alpérovitch2009,
author = {Alpérovitch, A. and Bertrand, M. and Jougla, E. and Vidal, J.S. and Ducimetière, P. and Helmer, C. and Ritchie, K. and Pavillon, G. and Tzourio, C.},
title= {Do we really know the cause of death of the very old? Comparison between official mortality statistics and cohort study classification},
year = {2009},
doi = {10.1007/s10654-009-9383-2},
volume = {24},
pages = {669--675},
}