@article{Vaupel2011,
author = {Vaupel, James W and Zhang, Zhen and van Raalte, Alyson A},
title= {Life expectancy and disparity: an international comparison of life table data},
year = {2011},
doi = {10.1136/bmjopen-2011-000128},
journal = {BMJ Open},
volume = {1},
number = {1},
}