@article{Spence2009,
author = {Spence, Naomi J. and Eberstein, Isaac W.},
title= {Age at first birth, parity, and post-reproductive mortality among white and black women in the US, 1982–2002},
year = {2009},
doi = {10.1016/j.socscimed.2009.02.018},
journal = {Social Science & Medicine},
volume = {68},
number = {9},
pages = {1625--1632},
}