@inbook{d4bff8d3afac4469acd55c31ab5bf635,
title = "D. Posttests Only with Comparison Groups: The Changing Association between Prenatal Participation in WIC and Birth Outcomes in New York City, What Does it Mean?",
author = "Bitler, {Marianne P.} and Currie, {Janet Marion}",
year = "2009",
month = apr,
day = "21",
doi = "10.1002/9781444307399.ch22",
language = "English (US)",
isbn = "9781405193931",
pages = "374--377",
booktitle = "Social Experimentation, Program Evaluation, and Public Policy",
publisher = "Blackwell Publishing Ltd.",
}