@article{Vaupel2011,
author = {Vaupel, J.W. and Zhang, Z. and van Raalte, A.A.},
title= {Life expectancy and disparity: An international comparison of life table data},
year = {2011},
doi = {10.1136/bmjopen-2011-000128},
volume = {e000128},
pages = {1--6},
}