New post: Update on Levitt paper on child car seats: A few years ago I noted the following quote from applied mi... http://bit.ly/RDn4wD
6:43 AM - 10 Sep 2012
0 replies
2 retweets
1 like
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.