@article{Berkman1989,
author = {Berkman, L. and Singer, B. and Manton, K.},
title= {Black/white differences in health status and mortality among the elderly},
year = {1989},
doi = {10.2307/2061264},
journal = {Demography},
volume = {26},
number = {4},
pages = {661--678},
}