@article{David1997,
author = {David, R.J. and Collins Jr, J.W.},
title= {Differing birth weight among infants of US-born blacks, African-born blacks, and US-born whites},
year = {1997},
doi = {10.1056/NEJM199710233371706},
volume = {337},
number = {17},
pages = {1209--1214},
}