@article{Mathers1999,
author = {Mathers, C.D. and Sadana, R. and Salomon, J.A. and Murray, C.J. and Lopez, A.D.},
title= {Healthy life expectancy in 191 countries},
year = {1999},
doi = {10.1016/S0140-6736(00)04824-8},
journal = {The Lancet},
volume = {357},
number = {9269},
pages = {1685--1691},
}