@article{Hamilton2005,
author = {Hamilton, B.E. and Martin, J.A. and Ventura, S.J. and Sutton, P.D. and Menacker, F.},
title= {Births: Preliminary data for 2004},
year = {2005},
URL = {http://www.cdc.gov/nchs/data/nvsr/nvsr54/nvsr54_08.pdf},
journal = {National Vital Statistics Report},
volume = {54},
number = {8},
}