@article{Yoon1996,
author = {Yoon, P.W. and Freeman, S.B. and Sherman, S.L. and Taft, L.F. and Gu, Y. and Pettay, D. and Flanders, W.D. and Khoury, M.J. and Hassold, T.J.},
title= {Advanced maternal age and the risk of Down syndrome characterized by the meiotic stage of chromosomal error: A population-based study},
year = {1996},
volume = {58},
number = {3},
pages = {628--633},
}