@article{Umberson2017,
author = {Umberson, D. and Olson, J.S. and Crosnoe, R. and Liu, H. and Pudrovska, T. and Donnelly, R.},
title= {Death of family members as an overlooked source of racial disadvantage in the United States},
year = {2017},
doi = {10.1073/pnas.1605599114},
volume = {114},
number = {5},
pages = {915--920},
}