@article{Salihu2004,
author = {Salihu, H.M. and Chatman, L.M. and Alio, A.A. and Aliyu, M.H. and Kirby, R.S. and Alexander, G.R.},
title= {Single motherhood and neonatal survival of twins among blacks and whites},
year = {2004},
journal = {Journal of the National Medical Association},
volume = {96},
number = {12},
pages = {1618--1625},
}